Regen, also known as “Health Regen”, refers to the amount of tower health regenerated per second.

However, depending on context, “Regen” can refer to a multitude of aspects of the game, including, but not limited to:

• the level in the workshop,
• the level in the lab,
• the Wall Regen,
• the Health Regen Perk,
• the Health Regen Card
• the regen Sub-Module Effect
• the regen Workshop Enhancements, and more.

Lab

You unlock this lab in Milestones by unlocking labs, which you do by reaching Tier 1 wave 30.

• Health Regen - Lab values, costs, and duration (99 levels)

Workshop & Workshop Enhancement

The Health Regen workshop consists of 6000 upgrades, and can be further enhanced with workshop enhancement.

Card

The Health Regen Card increases the regen when equipped, including its card mastery. Second Wind mastery also increases regen.

Perk