You got it right on the head, we used mushroom wars as our inspiration. The mutators change any unit that passes through a base. Once a unit goes through a base it gets a mutator based on the ones equipped on the base. If up upgrade any of the bases you can equip specific mutators from the list.
We wanted to add an instruction page when you start but we were fighting with build errors that took longer than we wanted which sucked up the time allocated to make an instruction page.
I've already made some changes to the game and will make some updates in the future when I have free time which will require more re-balancing for sure. Thanks for playing!