Move the ship by dragging the lower half of the field, moving the mouse, arrows / A-D, or a gamepad stick.

Fire is automatic. Tap, Space, the FIRE button or gamepad A also shoots (turn autofire off in Settings). Two shots on screen at a time, three with Rapid.

Enemies fly in on swooping paths, settle into formation, then dive at you. Elites (magenta) 40, warriors (orange) 20, drones (cyan) 10; a diving enemy is worth double.

Combo: every hit without a miss adds +5 per level, up to 20 levels. A shot that leaves the top of the screen resets it.

Power-ups drop from the ringed enemy: Spread, Rapid, Shield, Slow and an extra ship.

Bosses arrive every five waves with three attack phases. Do not let the formation reach your shields.

Modes: Campaign is 30 waves with a checkpoint every 5. Endless loops forever. Daily is ten seeded waves and a boss, one attempt. Boss Rush is six bosses scored on time and accuracy.