how complicated must it be for Sega to make a game on a console that be still in development at the same time ? and yet , the final game be a smash hit that happen to be pretty top-notch . they have pull through then , I guess . and now that there be a DX version , it be on several other system , include Gamecube , Xbox , PC , PS3 , etc , so everyone get a opportunity to see this classic . the game let you choose to play as 6 different character -lrb- however , you unlock they by play as Sonic first -rrb- . we have sonic -lrb- of course -rrb- , Tails , Amy , Knuckles , E103 Omega , and ... big the cat ... each of the character have they own gameplay mechanic , as well as goal and certain level . Below be the fun factor for each character . Sonic - The level be actually pretty straightforward . you simply go from start to finish . and boy be it fun . . it be actually pretty close to the Genesis Sonic game , but in 3d . collect ring , bash robot , you know . . the good stuff . plus , there be some new level-specific gameplay mechanic include , like Twinkle Park 's bumper car ride , and Sky Chase 's airplane combat ! you may as well buy this game just for sonic alone . after all , as the title character , he have the most level to go through . tail - more or less like Sonic 's gameplay except he have to race Sonic -lrb- later , Eggman , in speed highway -rrb- in each level . it be not as bad as it may sound , because it only just keep the pace go , which be great , and do not you think it be kind of exciting to find shortcut when fly ? knuckle - rather than go from start to finish , Knuckles have to find 3 emerald in each level . so how do you do so ? you glide around the place and see if a Emerald be pick up on a radar -lrb- really helpful -rrb- , and they could be hide in enemy or other place . the only minor -lrb- and only minor -rrb- downside with Knuckles be that there be only about 1 -lrb- or 2 ? -rrb- emerald throughout the game that could only be find by digging into the ground . I be expect Knuckles 's digging upgrade to be use a bit more specifically for find emerald . Amy - she be not as fast as the above 3 character , but she still be not a bad pick . although have the same robot chase she throughout level be a little cringe-inducing , Amy play pretty well , as she can attack with she massive hammer . e103 Omega - Alright . who expect a robot to be playable in a sonic game ? I certainly have not , but I be glad I be . Omega 's gameplay involve massive deal of weaponry , as well as be able to hover later on , and do certain task in the level . in final egg , for example , you must destroy Sonic doll . in Emerald Coast , you catch Froggy . in other level , you must go destoy other Omega robot ! I absolutely love play as this thing , as much as I love play as the first 3 character . big - Big be a pretty lame downside to this game . he be slow , and you have to go fishing for thing . it be as fun as describe , and I certainly do not want to go back to play as he . sadly , you have to beat the game as all character if you want to fight the actual last boss , Perfect Chaos , so ... ... that pretty much cover up the character . as for everything else , the level design be magnificent and lovingly craft . plus , the graphic be awesome for the time , and the soundtrack rock ! however , sonic adventure dx be not without flaw . there be a few time where the collision get a little awry , and the cutscene be not amazing , too . while the story be nicely do , some bit of dialogue be a bother . oh , yeah , and there be big the cat . nevertheless , these be , again , minor problem , as the game be so much fun that you would hardly think about they . oh yeah , and the unlockable collection of Game Gear game be a great bonus !