Its OK. It has an interesting "Co op but in single-player" gimmick, but its really under utilised, only ever needed for "push 2 buttons at once!" or "go through the door while one of you holds a button!", it more just becomes a nuisance for traversing around while trying to solve the "puzzles", and the puzzles themselves go from harmlessly easy to insanely boring and annoying, I must confess I actually did not even complete the 5th level as I spent awhile doing the first half of it, then ended up just stumped at the end, and had lost my patience at that point. The art and music fall under the branch of "its retro!!" which actually just translates to it being bad pixel art that doesn't really imitate any era/console while still looking poor. Its a good start, and its free so you really cant complain but overall quite lacklustre.