Question 1

How do I play?

Accepted Answer

Arrow keys or A/D to move, Space to shoot. On mobile drag to move, tap to shoot. Destroy all aliens each wave!

Question 2

Alien types?

Accepted Answer

Squids (top, 2 hits, 50pts), Crabs (middle, 1 hit, 30pts), Bugs (bottom, 1 hit, 10pts).

Question 3

How many waves are there?

Accepted Answer

Endless. Each cleared wave spawns a faster, lower fleet — chase your best wave count.

Question 4

How many lives do I get?

Accepted Answer

3 lives per run. A life is lost when an alien bullet hits you or an invader lands.

Question 5

Is my best score saved?

Accepted Answer

Yes. Best score and last wave are stored in your browser on this device — no login needed.

Question 6

What are the falling power-ups?

Accepted Answer

Destroyed aliens sometimes drop ⚡ Rapid fire (8s), ✖ Spread shot (10s), or ◈ Shield (blocks one hit). Fly into them to grab them — and watch for the bonus UFO worth +100!