a modern QuakeWorld client focused on competitive online play

ReC98 source port of the first Seihou Project game

Epic story-driven FPS running on the Build Engine

Tank digging battle game

The orb ponderer's arena first-person shooter

First-person shooter game

Open source first person shooter

Game engine for Return to Castle Wolfenstein

Source port for Build engine games

Aliens vs Humans, First Person Shooter game with elements of Real Time Strategy

Modern cross-platform port of the Descent engine

Free agile arena shooter

Game engine for Classic Doom

A Zandronum 3.0 fork with improved netcode, configurable movement and many small tweaks

FPS aim trainer

Open Source voxel shooter

Leading the way in newschool multiplayer Doom online

Free fast paced arena shooter

EDuke32 is an awesome, free homebrew game engine

Yamagi Quake II is an alternative client for id Software's Quake II

Fast paced, first person strategy game

The Free and Fast Arena Shooter

First-person shooter with cooperative in-game map editing

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

Top-down shooter action RPG

A free first person shooter for Mac, PC and Linux

Open source first person shooter

A modernization effort of DOOM-3-BFG

A Quake mod based on the retro shooter SPRAWL

Shoot and survive