Catch the Apple is simple. The only coded one right now is MakeyMakey, difficulty would be about a little more than Normal, but not that near Hard. It is compatible with the makeymakey. There is an "X" Formation, you press the arrow keys depending which slot the apple is in, so if its left then press left arrow, right and right arrow vise versa with up and down etc.
[Design] 21/9/15 - Coding, Basic Design, Etc. [Pre-Alpha] 22/9/15 - Pre-Alpha, MakeyMakey mode available