PRISM — arcade shooter in a cylindrical tunnel

PRISM is a free arcade shooter you can play right in your browser, with no downloads or installs. The camera looks down a cylindrical tunnel: you defend the near rim while enemies climb up from the far end.

How to play

• Move: click, tap or drag left and right to swing the ship to that lane.
• Fire: hold the mouse or touch, or the Space key, or turn on AUTO-FIRE.
• Pause: use the II button or the Esc key.
• Fullscreen: use the button in the top-right corner.

Enemies, waves and powerups

Clear increasingly tough waves and take down several enemy types (drifter, weaver, rusher, splitter and tank). Each has its own shape, colour, speed and score. Grab powerups to raise your fire rate, shot damage and turn speed.

Compete for the high score

The ten best runs are saved in the local scoreboard, with the score, the wave reached and the date. You can also share your result.

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