I had a similar game/toy but in manual and portable form.. If the slides are gonna be like this ("slot like") you should add points or something, like if you get the complete monster you get some points etc... although i'd like an option to controll the wheels abit more, so that i can choose the parts easily and create monsters like that :)
Kinda fun game, but got boring quite fast.. if you hold leftmousebutton while doing stuff like welding, you can like skip all the difficulty of the game by just let go at the next checkpoint and the hold the button again, andi doesnt matter where the mouse go when the button is hold down, you wont fail even if outside lines and stuff :o i assume thats a bug..
 "miniTerra"){kind=icon}
 "Travel English"){kind=icon}
 "Humano Theismo"){kind=icon}
 "Blocky Castle"){kind=icon}
 "Bloons TD 5"){kind=icon}
 "Moose To The Moon"){kind=icon}
 "Zelda the Welder"){kind=icon}
 "Candy Conveyor"){kind=icon}
 "The Scale of the Universe"){kind=icon}
 "Wasted Colony"){kind=icon}
 "Upgrade Sub"){kind=icon}
 "Johnny Upgrade"){kind=icon}
 "Linx: Hard Set"){kind=icon}
 "infect. evolve. repeat. 2"){kind=icon}