Mutators

Mutators are special conditions added to maps in Co-op Missions rotated on a weekly basis every Monday. They reward players with bonus experience depending on the difficulty. They were introduced in Patch 3.3.0.

Current Mutation (7/7/25-7/13/25)[]

Fear and Lava[]

Your armies have been surrounded, and their hearts are full of fear. The heat of the rising lava drives them into a panic as they break formation, placing their lives at greater risk as they run headlong into the molten sea. Work through the horror and gather the crystals when the lava subsides.

This mutation applies to "The Vermillion Problem."

Void Rifts: Void Rifts periodically appear in random locations and spawn enemy units until destroyed.

Fear: Player units will occasionally stop attacking and run around in fear upon taking damage.

Overview[]

Mutators are special conditions that bring additional challenge and diversity to existing Co-op Missions. Mutators can vary wildly, from having to fight a completely cloaked army, to dodging lava erupting from the ground. Mutators vary on a weekly basis. Each week, players have the chance to take on a Weekly Mutation where several Mutators are applied to a Co-op Mission. The mutation will be available for seven days with a break before the next one begins. Difficulty levels can still be selected, as can normal Co-op Missions, with the ability to toggle between the two modes.^[1]

Bounties[]

If players complete the weekly mutation, they will be awarded a tiered XP "bounty" bonus based on the difficulty level selected. Completing a weekly mutation on a higher difficulty level will award the cumulative sum of all XP bonuses up to that level. For example, completing the weekly mutation on Hard will award the sum XP bonus of Casual + Normal + Hard.^[2]