Pit: The Bite-Sized Shooter
A downloadable game
A little personal love letter to the FPSs of the early-mid 90s, featuring a variety of enemies and weapons to shoot them with. Levels can be completed in any order, and a robust list of cheats gives the player a lot of room to experiment and play around.
Simply download and unzip. Press f1 for instructions. Refer to "Readme.txt" for a discussion of how to fully enjoy Pit.