Unsung, a World War I adventure in Wolfenstein 3D, lets you slog through the trenches in true pixelated FPS fashion.

htahth says

1/10 - Agree Disagree (3)

Good mod, but it's a bit too short. I played it on Extreme difficulty and I finished it in an hour or so, really, I found it extremely easy lol. Hopefully you'll add more stuff to this mod in the future, 'cause WW1 is a nice setting.