Catatron: 

Aliens have taken over the world.

Humanity's last hope is man's best friend. No, not that one. The other one.

Powered by radiation, treats and rage you are the Atomic Defence Cat.

Rise up and save the day!

Controls

Your Atomic Defence Cat will automatically fire in the direction of travel. Holding Z or X will lock the firing direction to allow for more tactical play.

TIC-80 browsable version