Is Idle Space Tower Defence free to play?

Yes, 100% free — no download, no account, no payment. Open your browser and play instantly.

Does it work on mobile?

Yes. The game uses HTML5 and runs on Chrome, Safari and Firefox on Android and iOS devices.

How do I save my progress?

Progress auto-saves to your browser's local storage. Avoid clearing browser data to keep your save file.

Can I play with a friend?

Some modes support local 2-player on the same device. Check the main menu for multiplayer or co-op options.

The game is lagging — what can I do?

Close other browser tabs to free up memory, or try a different browser. Chrome generally provides the best performance for HTML5 games.

Idle Space Tower Defence

game.aboutGame

Can you defend your spacebase from the dozens of the enemies? Tower Features Exciting Tower Defense gameplay The huge amount of upgrades to choose from Invest your valuable coins to permanently upgrade your tower A fun, engaging browser game playable for free with no installation required — dive in and enjoy!