I'm going with Primal Menace IV - imagining as a trashy "direct to video" sequel kind of thing. Crappy art, crappy effects, the kind of game I would make way back when I was just starting out in game dev.
The animals have taken over, their primal instincts have come to the surface to menace humanity. You're "shooter guy" and yeah that's pretty much it. I've made a basic arena to test the core mechanics and I will add more enemies and the second weapon then make a proper level with a beginning and end.
