Thumb Rocket is a mobile friendly arcade experience with simple controls. The rocket is controlled by tapping the left & right halves of the screen, or both at once. I think the loading screen explains is pretty well, actually!
The game is game heavily influenced by the likes of Retry or Leap day, which I both enjoyed playing quite a lot. Similar to what made Flappy Bird so successful, the simple controls and quick respawn times make the game hard to put away.