Cosmoteer
It’s a 2D space sim where you build spaceships, manage subsystems, break up pirate ships to add parts to yours (even mid battle), with absolute freedom to do whatever and mechanics that encourage experimentation. Man, I don’t remember when a game pulled me in so bad.

We started Resident Evil 5 with a friend today, so far it’s pretty good coop experience

I think taking the heart out is the part that kills them, unless perhaps you reverse origami it while it’s still attached