Puzzle Den

Space Shooter: Defend the Galaxy

Drag your ship left and right. It fires on its own. Blast the invaders before they reach you.

About Space Shooter

Vertical space shooters are one of the oldest arcade genres. This version uses one-finger controls and automatic fire, so it plays well on phones.

Space Shooter at a glance

GenreArcade game
PriceFree, no download or sign-up
ControlsDrag or arrows
Typical game length3 to 10 minutes
Lives3 per game
Works onPhones, tablets and computers, in any modern browser
Daily challengeYes, the same puzzle for everyone each day

How to play Space Shooter

  1. Drag to move. Your ship follows your finger.
  2. Blast invaders. Big saucers take four hits.
  3. Survive. Every wave is faster.

Rules

Levels and difficulty

Waves speed up every 25 seconds; from wave 3 you get triple shots.

Scoring

10 points per invader and 50 per saucer. Daily challenge scores can be shared with friends.

Tips and strategy for Space Shooter

History of the game

The genre was defined by arcade classics like Space Invaders (1978).

How we built and tested Space Shooter

We tested hit detection, waves and heart loss in automated runs.

Frequently asked questions

Do I need to tap to shoot?

No, your ship fires automatically.

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Written and tested by Puzzle Den Editorial Team

Game design and testing. The Puzzle Den team designs, builds and play-tests every game on the site, and writes and reviews each guide. We check every level generator for solvability before a game goes live.

Published 30 September 2026 ยท Last updated 30 September 2026 ยท How we build and test games