A tactical stealth roguelike game

Top-down gauntlet-style action RPG with online multiplayer

Space shoot 'em up game.

Fast, faithful Classic DOOM action — solo or online

Classic overhead run-and-gun game

Multiplayer action game where you control small and nimble humanoids

Fun retro platformer & game creator

Fast paced 3D first person shooter

Story-driven FPS inspired by WWII shooters from the 90's and early 2000's

Tactical first person shooter with action movie elements

Free fast paced arena shooter

Source port of Cannon Fodder

Modern cross-platform port of the Descent engine

Dark 2D side-scrolling platform game

A modern cross‑platform port of “STAR WARS™: Dark Forces” with mod support

Free agile arena shooter

An old-school 2D platform game

Help barbie the seahorse float on bubbles to the moon

The Free and Fast Arena Shooter

Conservative source port

A colorful freeware fun shooter

Survival racing game

Lemmings-like game with puzzles, editor, multiplayer

A jump-and-run game starring Tux the Penguin

A modern re-implementation of the classic DOS game Duke Nukem II

2D motocross platform game

Open source first person shooter

OpenNox is a modern implementation of a Nox game engine

Old-school minimalist FPS

Save the Earth from the clutches of the Giant Brain from Planet X