DOS

OverKill

Title screen

Game menu

Intro screen

Fighting

Now approaching your first planet...

Your adventure begins...

Don't touch it!

Don't touch IT too!

Green ball... It's probably the most original design for spaceship...

It's getting harder...

No more lives? Oh, crap.

High scores

Credits screen

List of all power-ups in the game

In Overkill is even a "boss key". It shows something like that.