The idea is good, and the art in this is great too - I felt bad for the anxious proto. I did find myself wishing I could use the mouse cursor though since the signal decoding parts feel better suited to that.
In my first play through after he went down the tower for a break I climbed straight back up again and "played Crazy Eights" :P Played through again to get ending 1, not sure if there were others I missed.