reference throughout this specification to “ one embodiment ” or “ an embodiment ” means that a particular feature , structure , or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention . thus , appearances of the phrases “ in one embodiment ” or “ in an embodiment ” in various places throughout this specification are not necessarily all referring to the same embodiment . furthermore , the described features , structures , or characteristics may be combined in any suitable manner in one or more embodiments . in the following description , numerous specific details are provided , such as examples of user interfaces , screenshots , flow diagrams , etc ., to provide a thorough understanding of embodiments of the invention . one skilled in the relevant art will recognize , however , that the invention can be practiced without one or more of the specific details , or with other methods , components , materials , etc . in other instances , well - known structures , materials , or operations are not shown or described in detail to avoid obscuring aspects of the invention . as used herein , the term “ point ” refers to a type of currency which users may accumulate or lose through a quiz and may spend or gain in playing video games . in one embodiment , a user may wager points with other users in a video game , interactive video , or quiz . referring to fig1 , a flow diagram of a method 100 for administering and scoring a quiz is illustrated . the quiz may be related to a particular subject , skill level , standardized test , any other logical delimiting category , or any combination of the preceding . the quiz may be created by the user , by another user , or provided by the method . in step 102 , a question from a quiz is displayed . in step 104 , an answer from a user is received . the method may require that the answer have correct spelling or the method may not require that the answer have correct spelling . similarly , the answer may or may not require that the answer have correct capitalization . alternatively , the question may provide multiple choices for answers . any other known type of question and answer format may be used . at step 106 , the method determines if there are more questions in the quiz . if there are more questions , the next step is step 102 . if there are no more questions in the quiz , the next step is step 108 . in step 108 , the answers are scored and points are assigned . the assigned points are added to the user &# 39 ; s previous point total . in step 110 , the total assigned points are made accessible in a video game . the points may be used in a variety of ways . for example , in some games , a user has to perform mundane tasks , such as killing sheep , for example , to gain experience and / or money . instead of performing the mundane tasks , a user may use points gained through quizzes to advance game play , by , for example , exchanging points for money and / or experience . referring to fig2 a & amp ; 2b , a sample user interface 200 displaying a sample quiz question 202 is illustrated . an exemplary question 202 may be from a beginner math quiz or a first grade math quiz , for example . the user interface 200 receives input from the user . the user interface may use any known method of receiving input from a user , such as , for example , allowing a user to enter text into a text box 204 a , or allowing a user to select the correct answer from several answers 204 b . if the user enters an incorrect answer , the method may immediately notify the user , wait until the end of the quiz to notify the user of all of the incorrect answers , give the user only a score , not notify the user as to his performance at all , or use any other known method of handling an incorrect answer . the method may or may not inform the user of the correct answer . in instances when the user has misspelled an answer that is credited as correct , the method may or may not inform the user of the correct spelling . in fig2 a , the user interface 200 provides a user with the quiz question 202 asking for 3 multiplied by 4 and allows the user to type in an answer in a text box 204 a . the method may accept “ 12 ”; “ twelve ”; if misspellings are allowed , a misspelling of twelve ; if languages other than english are allowed , a correct answer in another acceptable language ; if misspellings are allowed and languages other than english are allowed , a misspelling of a correct answer in another acceptable language ; or any other known correct answer . when misspellings are allowed , how to determine an acceptable misspelled word is discussed in more detail below . fig2 b is similar to fig2 a except that there is no need to worry about a user entering an unexpected correct answer ( such as a misspelled word or a foreign language ) because the user must select an answer from the answer choices 204 b . fig2 a & amp ; 2b are offered merely as illustrations and are in no way meant to be limiting . any method of presenting a user with information and receiving input from the user may be used . referring to fig3 , a sample user interface 300 for displaying a user &# 39 ; s results from a quiz is illustrated . a field 302 may , for example , display the title of the quiz . a field 304 may , for example , display the total number of questions in the quiz . a field 306 may , for example , display the total number of questions the user answered correctly . a field 308 may , for example , display a number of points the user received from the quiz . a field 310 may , for example , display a new total of points for the user . in fig3 , the user interface 300 shows that the title of the quiz is “ basic math ” 302 , the number of questions in the quiz is 10 . the number of questions the user got correct is 7 306 , and the user gained 70 points 308 . before the user took the quiz , the user had 380 points and now the user has 450 points 310 . fig3 is offered merely as an illustration and is in no way meant to be limiting . any method of conveying performance feedback to a user may be used . in one embodiment , no method of conveying performance feedback is used at all . referring to fig4 , a user interface 400 for allowing a user to enter questions which can be used to make up a quiz . a field 402 may , for example , display the title of the current quiz . for instance , if the user is entering questions in a quiz for a seventh grade history class , the field 402 may contain “ seventh grade history .” a field 404 may , for example , display the current question count on the current quiz . for instance , if the user is entering the second question of a quiz , the field 404 may contain “ question 2 ”. a field 406 may , for example , be used to accept a question from the user . the field 406 , may be a text box or any other known method for receiving input from the user . a field 408 may , for example , be used to keep track of what type of answer the question will receive . for instance , if the user wants those people taking the test to enter their answer in a text box , the user may select “ text box ”, or a similar response , for the field 408 . if the user wants those people taking the test to select the correct answer from a list of possible answers , the user may select “ radio buttons ”, or a similar response , for the field 408 . the user may select any other appropriate selection for the field 408 . a field 410 may , for example , receive the correct answers for the question . if the user decides to allow people taking the quiz to select the correct answer ( s ) from a choice of answers , then the user may simply enter the answer choices . alternatively , if the user has decided to allow people taking the quiz to type an answer , then the user may need to determine if the quiz will accept answers that are misspelled and / or in a foreign language . a field 412 may , for example , allow a user to select whether the quiz will accept misspelled words . there are several ways that a user may indicate which particular misspelled word or words will be scored as correct . for instance , the user may create a list of acceptable alternate spellings . for a question , the answer may be “ mississippi ”. the user may create a misspelled word list with “ mississipi ”, “ missisippi ”, and “ mississippy ”, for example . in addition or alternatively , the user may create a set of rules for the misspelled word . for “ mississippi ”, the user may , for example , make the rules as follows : 1 ) starts with ‘ m ’; 2 ) followed by one of ‘ i ’, ‘ e ’, ‘ y ’; 3 ) followed by one or more ‘ s ’; 4 ) followed by one of ‘ i ’, ‘ e ’, ‘ y ’; 5 ) followed by one or more ‘ s ’; 6 ) followed by one of ‘ i ’, ‘ e ’, ‘ y ’; 7 ) followed by one or more ‘ p ’; and 8 ) followed by one of ‘ i ’, ‘ e ’, ‘ y ’. if all of the rules are met , the quiz may credit an incorrectly spelled word as correct . in addition or alternatively , the user may indicate that a phonetic spelling should be credited as correct . a phonetic spelling may be a spelling according to the soundex method , a variation on the soundex method , or any other phonetic spelling method . in addition or alternatively , a misspelling may be credited as partially correct , receiving a fraction of the available points for the question . a field 414 may , for example , allow a user to select whether the quiz will accept foreign languages . the user may choose which foreign languages are acceptable or may simply allow all that the method recognizes . a field 416 may , for example , allow a user to make a different question and / or answer choices for different quiz takers . for instance , a question in a particular quiz may be suitable for a regular class , too easy for an advanced class , and / or too hard for a remedial class . the user may select the field 416 to indicate that the user is going to enter a different , harder “ question 2 ” for the students in honors seventh grade history . additionally , the user may keep the question the same , but offer different , harder answer choices . in one embodiment , a user may indicate how much time will be allocated to each question . in such an embodiment , the user may alter the time allocated on a particular question for a particular quiz taker or subset of quiz takers . in addition or alternatively , the user may indicate how many points will be allocated to each question . in such an embodiment , the user may alter the points available for a particular question for a particular quiz taker or subset of quiz takers . in addition or alternatively , the user may allocate a certain number of points and the points awarded to a quiz taker may decrease from the allocated number as the amount of time it takes the quiz taker to answer the question increases . in addition or alternatively , the user may allocate different point numbers for different misspellings . fig4 is offered merely as an illustration and is in no way meant to be limiting . in an exemplary embodiment , a user could upload , scan or otherwise input notes , outlines or other data in a format that the method expects and generate quiz questions and answers with the data . any method of allowing a user to enter quiz questions and answers may be used . users may be organized into , for example , groups or classes . once a user makes a quiz , the quiz may be made available to selected quiz takers , quiz takers belonging to certain groups or classes , everyone , or any other subset of quiz takers . after a user makes a new quiz and designates a subset of quiz takers to which the quiz is available , information of the new quiz may , for example , be sent to the subset of quiz takers via electronic mail ( e - mail ), instant message , text message , or any other known method of sending information . referring to fig5 , an exemplary video game screen 500 is illustrated . a field 502 may , for example , display a user &# 39 ; s total points . a field 504 may , for example , display a title of a currently selected video game . a field 506 may , for example , display an item within the currently selected video game that the user wants to upgrade with points earned by taking quizzes . in one embodiment , the field 506 may , for example , be a list of items with a count representing how many items the user has . a field 508 may , for example , display upgrade options for the item which the user wants to upgrade . in one embodiment , the field 508 may , for example , simply display items within the currently selected video game which the user may purchase . if the user decides to upgrade or purchase an item , the user may do so by forfeiting the specified number of points and the user &# 39 ; s total points may be deducted by the specified number of points . a field 510 may , for example , contain a button that allows the user to leave the current screen 500 . in fig5 , a user is on a screen 500 for a game titled robobaskets 504 . the user has 450 points 502 and has chosen to upgrade one of the user &# 39 ; s robots &# 39 ; shooting arms 506 . the more the user spends on the robot &# 39 ; s shooting arm , the higher quality the arm is 508 , though the number of points an upgrade or item cost does not necessarily have to coincide with how useful the upgrade or item is in the game . if the user decides to leave the screen 500 without upgrading the robot &# 39 ; s shooting arm , the user can press “ back ” 510 . in one embodiment , a video game , interactive video , or quiz may contain advertising . for instance , in a basketball video game , companies may bid to place their corporate logos on the court in the game or in other places in the game . any other known method of embedding advertisements in video games , interactive videos , or quizzes may be used . fig5 is offered merely as an illustration and is in no way meant to be limiting . any method of allowing a user to exchange points earned in a quiz for upgrades , items , video game cheats , or any other video game enhancement may be used . referring to fig6 , a flow diagram of a method 600 for administering quiz questions in conjunction with an interactive video is illustrated . in step 602 , a group of users may be divided into two or more teams . if only one team has one or more user members , then one or more computer controlled teams may be created . in one embodiment , each user may comprise their own team . in step 604 , a question from a current quiz is displayed . in step 606 , the method receives a response from one or more members of one or more teams . the method may have a timer that forces users to enter their answers before the timer expires . if the method includes a timer and the timer expires before any users enter a response , then the method may move to step 608 without receiving a response from any users . in step 608 , a video currently playing is influenced by the received responses . the degree of correctness , response time , any other appropriate response standard , or any combination of the preceding may be considered in influencing the interactive video . a particular subset of users may have their responses weighted differently than other users . for instance , students in a regular class may have their responses weighted at 1 . 0 ; students in an honors class may have their responses weighted at 0 . 5 ; and students in a remedial class may have their responses weighted at 1 . 5 . in such a circumstance , an honors student may have to answer a question correctly three times as fast as a remedial student and / or answer three correct questions for every one correct question a remedial student gets correct in order to have the same influence over the video as a remedial student . in one embodiment , the method may consider the first answer , instead of aggregating answers in some fashion as described above . for instance , the method may have two teams , team a and team b , and , for the sake of simplicity , a video may be approaching a fork with two possibilities : a pro team a scene and a pro team b scene . a player from team a may be the first player to enter a response . if the responding team a player &# 39 ; s response is correct , then the pro team a scene may be displayed . otherwise , the pro team b scene may be displayed . in one embodiment , the method may consider which team has the first player to enter a correct response . in one embodiment , the users all take the quiz at the same time in the same location . for instance , students may take the quiz on networked computers in a computer lab or on their personal laptops connected to the internet . in such an embodiment , the questions and video shown on each computer may be the same throughout the video . in addition or alternatively , the quiz may progress through the questions at the same time , but individual students may receive different quiz questions from one another . in other words , for example , every student &# 39 ; s quiz question number 2 may not be the same . in one embodiment , the users begin the test at the same time , but do not necessarily start each question at the same time . in one embodiment , a user is allowed to progress to successive questions as soon as the user gives a response to the current question . in addition or alternatively , users may have a different amount of time for each question . in other words , for example , one student may have 30 seconds for the second question while another student has 45 seconds . in one embodiment , users do not necessarily begin a quiz at the same time . a user &# 39 ; s responses may be saved and later used as a “ shadow opponent ” for other users . in addition or alternatively , one or more user responses may be saved and the interactive video may be influenced by the saved responses ; so that the method may not need to receive user input while the video is displaying . in step 610 , the method checks for more questions . if there are more questions , the method proceeds to step 604 . if there are no more questions , then the method moves to step 612 , where the method makes question response results available for analysis . for instance , a teacher may want to analyze a class &# 39 ; s results after the class completes an interactive video / quiz . the teacher may analyze issues the majority of the class is having , as well as what issues particular students are having . any of the steps may be performed in any order . in particular , step 610 may occur directly after step 606 , so that all of the questions are answered before the video is influenced by any responses . in one embodiment , all of the quiz questions are answered and then each user is assigned a weigh based on their quiz results . during the video , the users are allowed to vote on how the video should precede , each user &# 39 ; s video response may be weighted by the quiz result weight . referring to fig7 a - 7c , a screen 700 showing an exemplary interactive video is illustrated . in fig7 a - 7c , like elements are similarly numbered . in fig7 a - 7c , the users are divided into two teams : team a and team b . team a is represented by stick figure 702 and has the score represented in field 708 . team b is represented by stick figure 704 and has the score represented in field 710 . in fig7 a , team a &# 39 ; s stick figure 702 is holding a basketball 706 and team b &# 39 ; s stick figure 704 is playing defense . in fig7 a , field 712 displays the question “ 8 × 2 =?”. fig7 b illustrates a possible video scene if team a &# 39 ; s players are more successful in answering the question in field 712 than team b &# 39 ; s players . in this scene 700 , team a &# 39 ; s stick figure 702 scores a goal and team a &# 39 ; s score is so reflected in field 708 . fig7 c illustrates a possible scene if team b &# 39 ; s players are more successful in answering the question in field 712 than team a &# 39 ; s players . in this scene 700 , team b &# 39 ; s stick figure blocks team a &# 39 ; s stick figure &# 39 ; s 702 shot and gains control of the basketball 706 . in this particular scene 700 , neither team a &# 39 ; s score 708 nor team b &# 39 ; s score 710 changes . which scene a video shows may vary on more factors than simply which team had the best results . for instance , the discrepancy between the teams may determine which scene is shown . if , for example , the players on team a do much better in answering the question in field 712 than the players on team b , then team a &# 39 ; s stick figure 702 may dunk the basketball 706 . however , if the margin between the results of the two teams is closer , then team a &# 39 ; s stick figure 702 may simply try a jump shot . how many players on a team answered the question in field 712 and how long it took for the players to answer the question may also factor in to which video is displayed . fig7 a - 7c are offered merely as illustrations and are in no way meant to be limiting . any interactive video influenced by the responses of one or more users of one or more teams may be used . referring to fig8 , a flow diagram of a method 800 for collecting and displaying quiz results is illustrated . in step 802 , the method may track user answers . the method may keep track of the exact answer a user entered or may simply tally incorrect and correct answers . the method may track an individual user &# 39 ; s performance on an individual quiz , an individual user &# 39 ; s performance on multiple quizzes , a certain subset of users &# 39 ; performance on an individual quiz , a certain subset of users &# 39 ; performance on multiple quizzes or any logical combination of user performance and quiz performance . in step 804 , the results from a current quiz may be added to the stored results . in step 806 , the quiz results may be organized and displayed in response to a user &# 39 ; s input . the results may be sorted by , for example , a quiz taker , a quiz subject , a quiz skill level , a subset of quiz takers , such as a group or class , or any other logical combination . once a quiz taker completes a quiz , the results or news of the results , may be sent to an interested party , such as the quiz taker &# 39 ; s parents or teachers , for example . the results or news of the results may , for example , be sent to the interested parties via electronic mail ( e - mail ), instant message , text message , or any other known method of sending information . the underlined headings above are intended to aid a reader in reading the specification and are not intended to be limiting . certain aspects of the present invention are not limited to a particular heading . for instance , even though there is an “ interactive video ” heading , aspects of interactive video are described in other portions of the specification . accordingly , the present invention may be realized in hardware , software , or a combination of hardware and software . the present invention may be realized in a centralized fashion in at least one computer system , or in a distributed fashion where different elements are spread across several interconnected computer systems . any kind of computer system or other apparatus , including smart phones and other mobile devices , adapted for carrying out the methods described herein is suited . a typical combination of hardware and software with a computer system with a computer program that , when being loaded and executed , controls the computer system such that it carries out the methods described herein . another typical combination may be a general - purpose computer system with a computer program that , when being loaded and executed , controls the computer system such that it carries out the methods described herein . another typical combination may be both a mobile communication device with a computer system with a computer program that , when being loaded and executed , controls the computer system such that it carriers out the methods described herein and a general - purpose computer system with a computer program that , when being loaded and executed , controls the computer system such that it carries out the methods described herein . the present invention may also be embedded in a computer program product , which comprises all the features enabling the implementation of the methods described herein , and which when loaded in a computer system is able to carry out these methods . computer program in the present context means any expression , in any language , code or notation , of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following : a ) conversion to another language , code or notation ; b ) reproduction in a different material form . while the present invention has been described with reference to certain embodiments , it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present invention . in addition , many modifications may be made to adapt a particular situation or material to the teachings of the present invention without departing from its scope . therefore , it is intended that the present invention not be limited to the particular embodiment disclosed , but that the present invention will include all embodiments falling within the scope of the appended claims .
disclosed herein is a system , comprising a quiz comprising a set of questions related to a subject , wherein a user submits answers to the questions and the submitted answers are scored with credits ; and a video medium , wherein the user can alter the video medium using the credits . disclosed herein is a method , comprising displaying a set of questions related to a quiz ; receiving answers corresponding to the set of questions ; scoring the received answers ; and issuing credits based on the scored answer , wherein said issued credits may be redeemable within a video medium .