What is Clusternauts?
Clusternauts is a free casual game with survival elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account.
How to play Clusternauts
- Press "Play now" on the game screen. Clusternauts loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Follow the in-game tutorial or the on-screen hints on the first level.
- Use the full-screen button at the bottom right of the player for a bigger view, and press Esc to leave full screen.
Game details
| Category | Casual |
|---|---|
| Tags | Survival |
| Controls | Shown in the game |
| Screen | Landscape (800 Ã 600) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GamePix |
| Added to Gameziko | 6 July 2026 |
Description from the developer
Clusternauts: frequently asked questions
Is Clusternauts free to play?
Yes. Clusternauts is free to play on Gameziko, with no download and no account needed. Like most free web games, it is funded by ads, so it may show a short ad before or between rounds.
Can I play Clusternauts on a phone or tablet?
Clusternauts is an HTML5 game, so it opens in modern mobile browsers as well as on a computer. Its controls were designed mainly for a mouse, so a computer usually gives the smoothest experience.
What games are similar to Clusternauts?
If you like Clusternauts, try 99 Nights in the Forest, Survival Island and Playtime Killer Chapter 4. They are casual games with similar themes, and you can find more in the Casual category on Gameziko.
Good to know
Clusternauts is made by an independent developer and delivered by GamePix, so Gameziko cannot change the game or recover lost progress. Any progress the game saves is kept in your browser on this device. If the game does not start, wait up to 20 seconds, allow ads for gameziko.com and try again, or report the game.