Regrow bloons will grow back layers much faster during this game.
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~ BATTD description
Healing Factor is a rule in Martian Games. It is always paired with Heartstopper, just like its difficulty modifier counterpart. When this rule is active, Regrow Bloons regrow layers 2x faster.
Strategy[]
Healing Factor generally is not much of an issue for a rule if the player has defenses that are sufficiently fast enough to clear out Regrow Bloons.