A chess database application

The head-to-head multiplayer volley-ball game

Fast arcade first person shooter

Sokoban-like Logic Game

A playground simulator

Cross platform, customizable graphical frontend for launching emulators

SDL2 based client for the Freeciv game

a modern QuakeWorld client focused on competitive online play

2006Scape is a free, Runescape 2006 Emulation server

Tuxemon is a free, open source monster-fighting RPG.

Retro-style 2D scrolling platform shooter

Minesweeper-like Game

A modern port of the original Quake engine

Jigsaw puzzle with tetromino pieces

An addictive crossy roads game with a twist

KBreakOut is a Breakout-like game by KDE

Game of skill with falling blocks

All-in-one Minecraft Client

A sliding-puzzle game

OpenNox is a modern implementation of a Nox game engine

Novel 3D loop/buzz wire style game

Top-down shooter action RPG

Pac-Man Clone

A remake of the platform game

Blast enemies off a stage

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

Tank digging battle game

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

Jigsaw puzzle game

Open Source voxel shooter