Could you download C3A3Q4Z6 and refer to main program, especially line 149-167?
Please download it asap because I'll keep it on the cloud server temporarily.
This is tiny Mario Maker like game. You can make stage / play game on bottom screen. The roles of each icon are as follows.
Blue block : low friction
Yellow block : bouncy
Brown block : obstacle
G icon : change location of goal
bottom left icon : eraser
bottom right icon : start playing game
I guess the reason why people port games on the market is pure technical interest, and it is understandable enough.
But, it must be forbidden strictly to expose keys of such games.