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Defend your fortress from hordes of alien ships and meteors! Strategy is key to survival in this game! Make sure you place ships in the line of fire of your enemies to slow them down! Also, upgrading your ships is extremely important! Make sure you don't forget to do that. Upgrade your base regularly for a higher chance of survival. Space is calling your name... Can you Survive?


Mouse: Navigate menus, Click to select
If you dig this, check out Pokemon Tower Defense!

Cosmo Fortress is an online action game developed by Elite Games, and has been played 12502 times on


Multiplayer Games


Cover Orange Level Editor

Create your own levels and share them with your friends!
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Top Games on BUBBLEBOX

Enjoy some of these legendary BB games
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Millions of people have played online games on Bubblebox, invite your friends and join in on the fun! Bubblebox started way back in the internets infancy, we know games! We host over 3,000+ games, the most popular of which nowadays are shooting, upgrades, simulator, ragdoll and .io games.
Recently the multiplayer io games genre has become hugely popular. Make sure you don't miss, and!

Since we've been around for many years traditionally popular categories like stickman games, RPG, physics and point and click games are packed with great classic titles and games series. Golden oldies which you can still play online for free include Raft Wars, Infectonator, Sift Heads, the Ducklife series, Age of War and Cover Orange.