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Cannon Keep playtest
by Brainflick
Build your city block by block and defeat waves of mechs in this tower defense roguelike! Combine powerful cannons with unique effects to survive the unforgiving wasteland and explore the underground to gather resources and find powerful relics.
Anyone with a Steam account can join, and it's free.
- Access
- Instant
- On playtest since
- May 29, 2026
- Planned release
- Dec 2, 2026
- Developer
- Brainflick
- Platforms
- Windows
- Players
- Single-player
- Languages
- English, French, German, Japanese and 5 more
How to join the Cannon Keep playtest
- Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
- Use the Cannon Keep playtest signup there. You're in straight away, with nothing to pay.
- The playtest shows up in your Steam library, ready to install and play.
New to playtests? How Steam playtests work
About Cannon Keep
BUILD
Backpack battles meets tower defense! Place and merge buildings onto the grid to grow your defenses. Expand your city's borders to increase your damage and scavenge the underground for resources.
DEFEND
Watch your defenses cut down waves of enemies and turn the tides of combat with the commander's powerful ability. Combine turrets with various effects to maximize your city's defensive capabilities.
PERSIST
Find your way to play by combining different buildings into your own unique strategy. Face growing hordes of enemies and take down their boss to claim a piece of the wasteland for yourself.
From the game's Steam page.
