"Five in a row" board game

Arcade Bombing Game

2D motocross platform game

Shisen-Sho Mahjongg-like Tile Game

Reversi Board Game

Launcher for LEGO Universe

Epic story-driven FPS running on the Build Engine

迷路をさまよういも虫を導いてください

Enjoyable metro building game

Classic instrument based rhythm game

Free and open source first-person shooter

Open source clone of Theme Hospital

Play Conway's Game of Life

Mindustry: A sandbox tower-defense game

Cross-platform Celeste Mod Manager

Fast paced, first person strategy game

Touch based reaction game for two players

KNetWalk is a game for system administrators

The Free and Fast Arena Shooter

A Free/Libre and Open Source Software Qt based Minesweeper game

Multiplayer Tennis Game

Retro penguin platformer for Gameboy

A simple maze game

A simple Pong clone

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

EDuke32 is an awesome, free homebrew game engine

A relaxing match 3 puzzle game with a twist

Jump pegs to eliminate them

ChessMD is a Qt-based chess app to play, analysis, review chess game and browse chess opening database.

Sidescrolling shooter where you control worms armed with a range of weapons