Luminous and Iceberg Interactive have released a sizeable content patch for their recent RTS game, Circle Empires.

In addition to the usual round of bug fixes and balance tweaks, this patch introduces new biomes, rare variant biomes, a new unit, a cosmetic change to workers so they now match the race of your starting hero, and the ability to use zombies as both workers and combatants.

The game’s name comes from the fact that each of the game’s procedurally generated maps consist of circular biomes with different effects and unit spawners. The game started life as a free browser demo that was expanded into a more advanced paid version. You can find the launch trailer above.

Circle Empires is available on Windows PC via Steam for $7.99.