I stumbled upon the game Timeslaughter today, and it is great run! It was a DOS game released in the mid 90's by Bloodlust software. A write up is available here, and I believe a download: http://www.bloodlustsoftware.com/timeslaughter.html Youtube video here: http://www.youtube.com/watch?v=4Jxag5Q53FE The graphics are obviously hand drawn. Badly.