Asteroids

Asteroids is the first game in the Panic series and a tribute to the 1979 arcade: a vector ship, an asteroid field that splits apart and a space that wraps around its edges. All in HTML5 Canvas and JavaScript, no install, free.

On top of the classic it adds power-ups, UFOs, end-of-level bosses and an online high score table to compete on. It also bundles a Space Invaders as a bonus game.