If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Once upon a time, In a distant world. A giat meteor landed, spreading myraids of strange crystals in the surface. Because of the radiation people we're force to live underground and each year a boy is sent outside to retrieve a piece of of crystal which is vital to their survival.
X to attack.
Arrow keys to move.