Reverse-engineered reimplementation of Twilight Princess
Compatibility layer for running Windows and Steam games
PSP emulator
Online poker HUD and tracking software
Free Texas hold'em poker
Physics sandbox game
Collection of small computer programmes which implement one-player puzzle games
Fitting tool for EVE Online
Multiplayer & singleplayer first person shooter
Dreamcast emulator
Arcade-style game
Virtual tabletop software
Chess toolkit
Client for Second Life and OpenSim
Sega Master System and Game Gear emulator
3D open-source Sonic the Hedgehog fangame built using a Doom Legacy port of Doom
Classic styled kart racer, complete with beautiful courses, and wacky items
Reimplementation of Sonic 3 & Knuckles (requires original game)
Open-world single-player space combat and trading RPG
Multi-platform Atari 2600 Emulator
Topdown tactical RPG roguelike game and game engine
teeworlds
Free-to-play Tetris clone
Fantasy-themed turn-based strategy game
Game trainer
Karaoke game
Game Master for Fantasy Flight board games