Mostly DOOM I, II mods, Thief, and other retro cool stuff. :)
Honestly 10 out of 10, even though I am kinda picky and have been playing lots of retro fps this past year, but this still managed to keep me on my toes, each world and secret got me more excited than the last!
over 40 hours of none stop madness put into this! and barely even covered it all!