Infection is entirely functional:
Being attacked can cause infection. Some infection parts give new powers immediately(latex fox arms? small claws, latex fox skin? rubbery hide).
You can infect enemies too!
Random enemies can pop up to menace you.
XP and cash is given for your victories(And shared to your pals if they are with you)
Areas can be set with min and maximum level of enemies within, and which enemies show up, and how often per movement.
Status effects are in and working nicely.
Gear can be purchased and used to augment your awesome mutant powers. Who says being a dragon precludes you from using a gun?
