Free train simulator

The word-guessing game

Rescue Helicopter Simulator

Online multiplayer shooter game

Joco de tabula Reversi

Open source clone of Theme Hospital

Flight simulator

Beat them all

A cross-platform reimplementation of “Jedi Knight™: Dark Forces II”

High Detail Old School Runescape Client

A sweet Chess game

Modern cross-platform port of the Descent engine

An addictive game about frozen bubbles

Block-based multiplayer game platform

Multi-platform Scorched Earth clone similar to the Worms series of games

EDuke32 is an awesome, free homebrew game engine

Puzzle game

Joco de puzzle Jigsaw

A 3D Sonic the Hedgehog fangame based on a modified version of Doom Legacy

Epic story-driven FPS running on the Build Engine

A simple GOG client for Linux

KNetWalk is a game for system administrators

An open-source port of the DOS shoot-em-up Tyrian.

Guess a word in few attempts

A free to play, graphical MMORPG

Modrinth's game launcher

Remove colored balls from the board by forming lines

Play Zenless Zone Zero on Linux

Free Train Simulator for everyone

Mahjong Solitaire