I really liked your game and it's fun. I don't usually like platform games, but I was pleasantly surprised. I really liked the concept, it makes the gameplay both cerebral and mechanical, which goes very well with the theme and the object. BUT, I have to be honest with you, I think the graphics are very poor, I hope that doesn't cause it to be judged unfairly before being played.
Anyway, Excellent job! And if you do more, I'll play it again :D ! And I think a leaderboard with a timer, for 'speedrun' would be top.
Btw, I have a bug or this is the end of the game ? I kept getting the game freezed here : 