FlightGear

FlightGear is an open-source flight simulator.

Details
Soulframe

Soulframe is a free-to-play MMORPG video game developed and published by Digital Extremes.

Details
Sonic Robo Blast 2

Sonic Robo Blast 2 is a 3D Sonic the Hedgehog fangame based on a modified version of Doom Legacy.

Details
Widelands

A free and open-source, slow-paced real-time strategy video game under the GNU General Public License.

Details
Simon Tatham's Portable Puzzle Collection

A collection of small computer programs which implement one-player puzzle games.

Details
IdentityV

Identity V is an asymmetrical multiplayer RPG video game developed and published by NetEase.

Details
King of Avalon

King of Avalon is set in a fantasy medieval England bringing back the legend of King Arthur and the Knights of the Round Table.

Details
TETR.IO

Puzzle together in this modern yet familiar online stacker!

Details
Neverball

Tilt the floor to roll a ball through an obstacle course before time runs out.

Details
Palamedes

Play backgammon and other variants against award winning AI

Details
Robin

A short slice of life game that was made to give some visibility to an invisible illness - Chronic Fatigue Syndrome. What you decide to do in the 3 days is up to you, but know that there is never such a thing as a perfect ending.

Details
Dual Universe

Dual Universe is a forward-thinking online game featuring a persistent and shared universe made with next-generation voxels.

Details
Dink Smallwood HD

Dink Smallwood HD is an old school adventure/RPG.

Details
PokeMMO

PokeMMO is a fan-made, free-to-play MMORPG based on the Pokémon games.

Details
Shattered

About a bird living nearby a beautiful mountain. The player takes the role of the little blue bird and starts the game by searching for his brother.

Details
UltraStar WorldParty

A free and open source karaoke game. It allows up to six players to sing along with music using microphones in order to score points, depending on the pitch of the voice and the rhythm of singing.

Details
Bombermaaan

A classic Bomberman game with multiplayer support.

Details
xmoto

A challenging 2D motocross platform game, where physics play an important role.

Details
Xonotic

The Free and Fast Arena Shooter

Details
Rock Paper Scissors CLI

A simple game of rock paper scissors

Details
Roblox Player

One platform. Millions of ways to engage.

Details
NIKKE

Goddess of Victory: Nikke is a third-person shooter action role-playing video game developed by Shift Up and published by Level Infinite.

Details
Pokemon Showdown

An online pokemon battle versus game

Details
Star Trek Fleet Command

Customize your fleet and crew to dominate the galaxy in this award-winning Star Trek 4x MMO.

Details
Cube 2: Sauerbraten

A free multiplayer & singleplayer first person shooter, the successor of the Cube FPS.

Details
Sonic Robo Blast 2 Kart

SRB2Kart is a classic styled kart racer, complete with beautiful courses, and wacky items.

Details
StepMania 5

StepMania is an advanced cross-platform rhythm game for home and arcade use.

Details
Doomsday Engine

FIRE UP THE CHAINSAW

Details
Dolphin

Dolphin emulates the Nintendo GameCube and Nintendo Wii on your PC.

Details
Nitronic Rush

Survival racing game developed by students at DigiPen

Details
Clone Hero

Clone Hero is a classic instrument based rhythm game for Windows, Mac, Linux, and Android

Details
Cataclysm: Dark Days Ahead

A turn-based survival game set in a post-apocalyptic world. While some have described it as a "zombie game", there is far more to Cataclysm than that. Struggle to survive in a harsh, persistent, procedurally generated world.

Details
Corporate Clash Launcher

Toontown: Corporate Clash is a completely free to play massively multiplayer online game designed to be the new experience of a game many of us loved.

Details
Risen3D

Risen3D is an advanced Doom port by Graham Jackson based on Jaakko Keranen's Doomsday port.

Details
FreedroidRPG

The game tells the story of a world destroyed by a conflict between robots and their human masters. Play as Tux in a quest to save the world from the murderous rebel bots who know no mercy.

Details
Freeciv

Freeciv is a Free and Open Source empire-building strategy game inspired by the history of human civilization.

Details
Planet Blupi

Planet Blupi (known as Planet Eggbert too) is a strategy and adventure game. It subtly blends action with thought-provoking challenges. Behind the quiet and gentle facade, you'll enjoy a fascinating diversion full of surprises.

Details
Colobot: Gold Edition

Epsitec.Colobot

Details
Endless Sky

A sandbox-style space exploration game.

Details
Armagetron Advanced

Armagetron is a multiplayer game in 3D that attempts to emulate and expand on the lightcycle sequence from the movie Tron. It's an old school arcade game slung into the 21st century.

Details
Cube

An open source first-person shooter game built on a very unconventional landscape-style engine.

Details
Pixel Wheels

A top-down retro racing game for PC (Linux, macOS, Windows) and Android.

Details
Warsow

Free fast-paced first-person shooter set in a cyberpunk universe

Details
Dwarf Fortress Classic

A world building fantasy game, controlling a dwarven outpost or an adventurer in a randomly generated, persistent world.

Details
Luanti

A free open-source voxel game engine with easy modding and game creation.

Details
Live for Speed

A serious racing simulator. No arcade modes, no steering aids - YOU have to do the driving.

Details
Elsword

Free to Play Anime Action MMORPG.

Details
Rise of Kingdoms

Experience the world's first true RTS gameplay in this epic strategy game featuring unrivaled degrees of freedom.

Details
TrackMania United Forever

All environment types from TrackMania 1, Sunrise, and Nations Forever, united in one game.

Details
ManiaPlanet

ManiaPlanet is a gaming system where you can create, share and enjoy games made by people like you.

Details
Nethack

Single-player roguelike videogame.

Details
Journey to the Center of Hawkthorne

A 2D platformer based on Community's Digital Estate Planning episode. It's built using the LÖVE game engine.

Details
Bob the Hamster VGA

Bob the Hamster is a spiffy game, inspired by old arcade classics like `Dig Dug' and `Mr. Do'. Choose to play as Bob the Hamster and gather carrots, or as Vlad the Hamster and smite foes. Playable in both English and Japanese text modes.

Details
Retro-asteroid-war

Small arcade game inspired by the arcade machines of the 1980s.

Details
kdiamond

Three-in-a-row game.

Details
ksquares

Connect the dots to create squares.

Details
kollision

A simple ball dodging game.

Details
kolf

Miniature Golf

Details
kiriki

Yahtzee-like dice game.

Details