I like the idea and it's very point on "hybrid" theme.
Tiny niggle, when you launch the game, it's very hard to get back to check keys in browser on Itch.io page to get back to main menu :D
Bounce sometimes is quite heavy and it's hard to predict, but I guess this comes down to being proper hard core game and each level only has limited number of steps, so it's not that hard to figure out in the end.
Good entry :)