It opens in its own tab so the game gets the keyboard — framed on this page it would not see an arrow key.
arcade / Bounce — the full game
Bounce — the full game
Four levels played as one run, with lives and score carried through, two new surfaces introduced a level at a time and a Game Complete screen at the end. The level-1 demo asks whether a model can make the physics feel fair; this one asks whether it can finish a game.