MoveHold the arrows (or WASD / arrow keys). Stay clear of red blocks and laser lines.
FireTap FIRE for a shot. Hold it until the ring pulses, then release for a beam. Hold at full energy for a screen-clearing blast. (Keys: J, K or X.)
DashDouble-tap ◀ or ▶ (or press Shift) to dash through danger. It costs a little energy and makes you briefly untouchable.
FreezeEvery 5 waves the FIRE button glows ice-blue and says FREEZE. Tap it: time crawls, so grab the coins around you, then tap BLAST (or wait) for a nova of bolts in every direction. More coins means a bigger blast.
CoinsChain coins to raise your multiplier, up to x5. Taking a hit resets the chain.
Power-upsS shield · T slow time · M coin magnet · ♥ extra life
Waves and bossesEvery wave changes the mix. Every fourth wave a boss arrives, and each boss has a new trick. Beat one to pick a bonus for the run. Spend coins in Upgrades.
Daily challengeEveryone gets the same blocks today. Same seed, so scores compare fairly.
Space pauses on a keyboard. The game also pauses when you leave the app.