It looks and "feels" kinda cool for a one-button game. But while the game does start to get catchy after getting into it, it risks losing people early since it starts needing precise timing pretty quickly. It would probably be better to include brief in-game instructions saying you need to click while the cube is on circles (not depending on the auto-repeat jumping that happens if you continuously hold down the button) to make special things happen. The submarine is just nuts to start controlling right off that switch from the cube, and having to restart from the beginning when it crashes is enough to make me call it quits at that point.