Tower Defense Space

Play Tower Defense Space free online: stop alien invaders. A space tower defense game with Retro Coins.

How it works

Play, earn points and Retro Coins: the shared currency across every RetroPlayNow game. Unlock badges and climb the leaderboard! Your progress is saved automatically on this device.

Tower Defense Space is a space-themed tower defense game where you place space towers to stop alien invaders from reaching your space station.

The goal is to survive all waves of alien invaders. Each tower has different abilities: some shoot lasers, some slow aliens, some have area effects. You earn credits for each alien destroyed.

The challenge is choosing the right towers and placing them strategically. Some aliens are fast, some are tough, some have shields. You must adapt your strategy to each wave.

Our RetroPlayNow version features multiple tower types, special alien variants, and a scoring system that rewards surviving waves. Every wave survived earns Retro Coins.

How to play Tower Defense Space

  1. Place towers. Click on empty spaces to place towers. Each tower costs credits.
  2. Stop alien waves. Towers automatically attack aliens in range. Stop them before they reach your station.
  3. Earn credits. Each alien destroyed earns credits. Use credits to build or upgrade towers.
  4. Upgrade towers. Click on existing towers to upgrade them. Upgrades increase damage and range.
  5. Earn Retro Coins. Score points by surviving waves. More points mean more Retro Coins.

Frequently asked questions