Drag to fly; hold still to fly level. Double tap, or tap with your other thumb, to fire. Shoot acid clouds to burn them back into light; Dark Red clouds take 2 shots. Every cloud you clear fills the sky with your world's colour, and a full sky completes the level. Each colour world has 3 levels, and the third is a boss guarding that colour's Prism Shard. Enemy jets fire as they arrive, so keep moving or shoot their bullets down. Downed pilots eject: cut their strings with your laser or fly through them. Acid rain eats your hull, which repairs once you're out of the rain. Hits in a row build a combo multiplier. On a computer: ↑ and ↓ to fly, Space to fire, P to pause.

Points: cloud 5, red cloud 10, jet 15 to 25, cut strings 20, snagged pilot 30, level bonus 50 × level.