just a preface , we have the old incredible machine game which have be `` incredible '' as it have hold the interest of my 4 boy -lrb- now 6,9,11,13 -rrb- for many year . that be indeed a marvel since it be graphic be date and will run on virtually any pc from 1998 on . this be suppose to be a modern version of this type of game . it be but the interface be not intuitive and do not make effective use of the mouse imho -lrb- probably because this be also available for console system -rrb- . it be very hard to grasp what to do initially -lrb- as the other review state -rrb- but you slowly figure it out . maybe with more play it will be easier but the designer could learn a few thing from the old incredible machine game . also of note be that it will install in xp but will not run , until you manually install m dotnet 3.5 -lrb- I find this out after some googling and it be on the game designer web forum -rrb- . this be only necessary on xp , on Windows 7 it run without issue .