CLICK / TAP Launch a counter-missile toward the cursor. The nearest battery with ammo fires.
🛡️ Explosions destroy any enemy that touches them — chain them for combos.
🟣 MIRVs split into multiple warheads mid-air. Shoot them early.
⚡ Power-ups drop from destroyed enemies — click to grab: Multishot, Slow-mo, Shield, Big Bang.
🛸 Bonus flyers streak across the top sky mid-wave — zigzag UFOs weave, red beam UFOs hover and vaporize a city if you don't shoot them in time!
☢️ Nuke (rare, wave 5+): grab this red bonus to instantly destroy every missile and flyer on screen.
🛒 Shop appears between waves — repair cities, refill ammo, upgrade weapons.
⌨️ P pause M mute ESC menu