Prism Keep
An endless roguelite tower defense. Hold back the Void with towers that branch, relics you forge and wonders that light up the whole map. Every run ends. The question is how far you get.
What's inside
10 towers, many paths
Pulse, Frost, Tesla, Venom, Prism and more. Each one branches into its own specialisation as you upgrade.
Bosses every 10 waves
Colossus, Hive Queen, Leviathan and others, each with mechanics you have to answer.
Relics and the Forge
Loot relics from bosses, socket them into towers and forge two into one stronger relic.
Wonders
Build huge 2×2 superweapons on Wonder Sites as the map keeps growing.
Drafts that shape each run
Pick augments and map expansions as you go, so no two runs play the same.
The Lab
Spend Prisms between runs on permanent upgrades, new wonders and new relics.
Support
Found a bug or have an idea? Email contact@lukaspollard.com.
Your progress is saved on your device only. Uninstalling the app or clearing its data removes your saves.