We have now included a bonus "Making Of Metal Dead" booklet detailing the story behind the game's production for all owners of Metal Dead on Steam!
This short booklet goes back to Malcolm and Ronnie's humble beginnings, and is filled with concept art and commentary by the creators.
You can find this booklet by navigating to your Metal Dead installation folder (usually c:\Steam\SteamApps\common\MetalDead) where you'll find the file titled "The Making of Metal Dead.pdf".