Free Open Source Games For Mac

Games on this list were included based on recommendations, if you'd like a game added to this list, please post it on the sticky of /f/Games. For a more comprehensive list, please see this Wikipedia page.

Nexuiz (classic) is another great FPS that's free to play on multiple platforms. The game is based on the Quake engine and has been made open source under the GNU GPLv2. The game offers multiple modes, including online, LAN party, and bot training. The game features sophisticated weapons and fast action. Looking for the best free games for Mac? After testing 40+ games, these are our Top 20 free Mac games. It includes games from every genre and games ranging from completely free open-source games to very generous online, free-to-play games. Syberia is now free on Steam! A nice adventure game, Syberia, is free to collect in Steam until September 29th 10:45 pm (Idk the time zone someone tell me). It has good reviews and it has a price cut from 6.29$ to 0.00$ so I'd say it's a good deal! EDIT: Both Syberia 1 and 2 are FREE until the deadline.

Ardentryst - Action/RPG sidescroller.
Beneath a Steel Sky - Classic adventure game with excellent artwork and voice talent. Should be available in the Ubuntu repos
Egoboo - Action-adventure rogue-lite game
Eldevin - F2P Runescape clone with a distinct charm
Epic Inventor - Side-scrolling, Action RPG inspired by Terraria.
Flare - A surprisingly in-depth and polished isometric RPG
FreedroidRPG - Diablo-style ARPG.
Lugaru - Turner, is an anthropomorphic rebel bunny rabbit with impressive combat skills. In his quest to find those responsible for slaughtering his village.
Myst Online: Uru Live - MMO adventure game in where players interact with others to solve puzzles and advance the story.
ScummVM's Freeware Games - Some fantastic point'n'click games here, my favourite probably being Dreamweb
Solarus Games - Solarus is a game engine for making Zelda-like games, but there are many completed games available on their website, and also community made games
Summoning Wars - Action roleplaying game for singleplayer or up to 8 players in multiplayer.

Altitude - 2D Online plane combat
Chromium-BSU - Top-down arcade Shmup
Deflector - Retro style, ball bouncing, arcade game.
Kobo Deluxe - 8-way scrolling shooter
LBreakoutHD - Open-source breakout clones.
OpenTyrian - The famous Shmup
SSVOpenHexagon - Open-source clone of Super Hexagon. Source code for packagers
Super Tux Party - Party game that is meant to replicate the feel of games such as Mario Party. (Source code)
TeeWorlds - Online 2D shooter
Witch Blast - Open-source clone of Binding of Isaac. Source code here for packgers.

Hummingbird - Infinite procedural musical exploration game.
Passage - A simple experimental side scroller game intended as an abstract metaphor for the human condition.

Apple Flinger - Angry Birds-clone for Android.
Atomic Tanks - Multi-platform Scorched Earth clone similar to the Worms series.
Cat-O-Pult - Castles/Worms type of a game, but in this one you use cats as your weapon of choice.
Gusanos - Clone of the DOS game Liero.
- Hedgewars, Warmux and OpenLierox - Clones of Worms.

Free Open Source Games For Mac Computers

Argentum Age - Open-source fantasy card game
c4 - Connect Four game, with AI. Source code
Desperate Gods - Online board game where no rules are enforced by the computer, and all moves are performed in a shared physical space. The game itself is a dark fantasy dungeon crawl for up to four players.
Domination - Game based on the board game 'Risk'.
Lichess (source code), Lucas Chess, 3D Hartwing Chess Set (source code) and DroidFish Android Chess App - Chess games.
Magarena - Single-player fantasy card game.
OGS Mahjong, Green Mahjong (source code) - Games of Mahjong.
PokerTH - Free online poker with the best open source texas holden poker game and a great community
PySolFC, Solitaire.gg, Aisleriot - Collection of solitaire games.
Quatter- Game of Quarto.
RosettaStone - Hearthstone simulator using C++ with some reinforcement learning.
Scrabble3D - Highly customizable Scrabble game. Supports Classic Scrabble, Superscrabble and also 3D games and own boards.

Free Open Source Games For Mac

Open source software is any kind of program where the developer behind it chooses to release the source code for free. Whenever software has an open source. Unreal Engine 4.27 is released! Creators across all industries have something to celebrate with this release: In‑camera VFX goes next-level with a slew of improvements, while other highlights include path tracing for stunning final images, out-of-the-box access to Oodle and Bink, production-ready Pixel Streaming, and much more.

CorsixTH - Clone of Theme Hospital
Freeserf - Clone of The Settlers 1/Serf City.
FreeTrain - Rail and business simulation inspired by the A-Train series of games.
KeeperRL - Dungeon management and roguelike.
LinCity-NG, Micropolis Web and 3d.city - Clones of SimCity.
OpenSkyscraper - Clone of the simulation game SimTower.

OpenTTD (GNU/Linux, Windows & Mac) - a transport simulation game based upon the popular game Transport Tycoon Deluxe, written by Chris Sawyer.
OpenRCT2 (GNU/Linux, Windows & Mac) - An open source reverse engineering of Rollercoaster Tycoon 2. Requires assets from the original game, acquirable here

Scorched 3D - Simple turn-based or real-time artillery strategy game
Simutrans - Open-source transportation simulator clone.
The Founder - Dystopian business-simulator. Source code
Unknown Horizons - Village builder inspired by the Anno series
Widelands - Polished Settlers clone

OpenOMF - Remake of One Must Fall 2097.

FlightGear - Flight simulator.
Triplane Classic - Sidescrolling dogfighting flying game

Alien Arena - Retro Sci-Fi Online FPS
Cube 2 - Quake-like Arena online FPS with multiple game modes
ET Legacy - Wolfenstein: Enemey Territory for modern systems
Digital Paint: Paintball 2 and Digital Paint: Paintball 3 - Fast-paced first-person shooters.
FreeCS - Reimplementation of Counter-Strike 1.5.
Freedoom - The Freedoom project aims to create a complete free content game based on the Doom engine.
Nexuiz - Multiplayer first-person shooter.
OpenArena - Online arena FPS using the id tech engine
OpenSpades - Clone of Ace of Spades 0.75, featuring fully destructible terrain and plenty of game modes (including the well-known Capture the Flag).
Quetoo - Multiplayer first person shooter based on id Tech2.
Red Eclipse (GNU/Linux, BSD, Windows & Mac) - a free online arena shooter with parkour.
Termulous - Asymmetric team-based RTS/FPS Hybrid with aliens! (Source code)
Übergame - Realism like, multi-purpose, multiplayer, casual, first-person-shooter game.
Unvanquished - First-person strategy shooter, pitting technologically advanced human soldiers against hordes of highly adaptable aliens.
Urban Terror - Fast paced online FPS reminiscent of Counter-Strike
Warsow (GNU/Linux, Windows & Mac) - a fast-paced FPS in a futuristic cartoonish world.
Xonotic (GNU/Linux, BSD, Windows & Mac) - a free online shooter, based on Quake.

Biketris - Hybrid of block-stacking puzzle and endless runner.

Birdsong - Game about a bird that is about to leave the nest.
Meteorite - Lowres FPS, inspired by Metroid Prime.
The Diasporic Crypt - Libre game inspired by Castlevania, where you play a vampire who moves around in a portable teleporting catacombs underground.

Evol Online - 2D MMORPG. Source code
ImperiumAO - Source code
PlaneShift - 3D fantasy MMORPG.
Ryzom A game where there are no classes to choose, nor force to choose a faction or guild.
Stendhal - 2D MMORPG.
The Mana World - 2D MMORPG. Source code

Auto Rhythm - Rhythm game with auto generated note maps.
Frets on Fire X - Highly customizable rhythm game supporting many modes of guitar, bass, drum, and vocal gameplay for up to four players.
osu! (Source code) and McOsu - Based on the gameplay of a variety of popular commercial rhythm games.
Performous - Karaoke, band games and dancing in the same package.
StepMania - Advanced cross-platform rhythm game.
Turnt Ninja - Fast-paced rhythm game that uses your own music.
UltraStar Deluxe - Clone of SingStar.

CaveExpress - 2D platformer with physics-based gameplay.
Golems - 3D physics simulator.
Gravity Box - Puzzle platformer where you have to use bullet's blast to push towards the finish points.
Neverball - Puzzle game inspired by Super Monkey Ball.
Nikki and the Robots - Physics platformer.
OpenGOO - Clone of the physics based puzzle / construction game 'World of Goo'.
Rigs of Rods - Vehicle simulator based on soft-body physics.
Safety Blanket - Creepy blanket simulator.
The Powder Toy - Physics sandbox game, which simulates air pressure and velocity, heat, gravity and a countless number of interactions between different substances.
XMoto - 2D motocross platform game.

2048 (Browser) - a sliding addition game.
Blockout2 - 3D Tetris
Duck Marines - Open-source clone of Chu Chu Rocket. Source code here for distro packagers.
FloboPuyo - Open-source clone of PuyoPuyo. Source-code for packagers
Frozen Bubble - Open-source clone of Bubble Bobble.
Not Tetris 2 - Tetris with physics
Pingus - Lemmings clone.
Portable Puzzle Collection - 39 old school puzzle games

Extreme Tux Racer and Tux Rider - Android Edition- High speed arctic racing games based on Tux Racer.
Marble Marcher - Ray-traced racing game on the surface of evolving fractals.
Speed Dreams - Motorsport simulation and racing game.
Stunt Rally - Racing game with rally style of driving.
The Open Racing Car Simulator - Car racing simulation.
Trigger Rally - Fast-paced single-player racing game.
VDrift - Racing simulator.
Yorg - 3d racing game in the style of MicroMachines.
Speed Dreams - Realistic racing sim
SuperTuxCart - Open-source clone of the Mario Cart games (Not suitable for low-end systems)
Yorg - A top-down racer in the Micro Machine's style.

ADOM (Ancient Domains of Mystery) - Another great roguelike, with a huge world and many ways to play
Brogue - Your goal is to travel to the 26th subterranean floor of the dungeon, retrieve the Amulet of Yendor and return with it to the surface.
Cataclysm: Dark Days Ahead - Unique zombie survival rogue-like, very thrilling to play.
DoomRL - DOOM, but roguelike!
Dungeon Crawl Stone Soup - A roguelike adventure to find the mystifyingly fabulous Orb of Zot.
Fame - Fantasy roguelike game with graphics tiles, inspired mainly by ADOM.
Kobold Dungeon Tester - Mix of a roguelike and a multiple choice text-adventure
NetHack - Does this need an introduction?
Planetary Sanitations Inc. - Roguelike mech dungeon-crawler
Roguebox Adventures - Neat little graphical rogue-like with a focus on survival and crafting. Source code here for packagers
Tales of Maj'Eyal: Age of Ascendancy - Ultra polished graphical roguelike with the option to save your game
The Endless Dungeons - 8-bit style random dungeon game
UnReal World - Crazy in-depth survival roguelike based in iron age Finland

Andor's Trail - Single-player quest-driven fantasy RPG.
Angband (GNU/Linux, Windows, Mac & Android) - a single-player dungeon exploration game in the universe of JRR Tolkien.
Cataclysm DDA - Cataclysm: Dark Days Ahead is a turn-based survival game set in a post-apocalyptic world
Crossfire - Cooperative multiplayer graphical RPG and adventure game.
Erebus - Classic point-n-click style RPG.
GearHead - Mecha roguelike.
Red Rogue - Sidescrolling platformer-roguelite with optional realtime movement.
Shattered Pixel Dungeon (Android) - a traditional roguelike game with pixel-art graphics and simple interface.
Star Ruler 2 - Explore, expand, exploit and exterminate your way to become the ruler of the Galaxy.
Tuxemon - Clone of Pokémon.

ativayeban and FallingTime - Clones of Fall Down.
Bard's Lesson - Platform game in which you help a bard fox in his journey to become a maestro by mastering music notation.
Commander Keen 4 - Classic Shareware DOS title ported to Linux
Dolphin Island 2 - Open source action-adventure platformer
Fox Dash - Side scrolling 2D platformer for Android. Source code
Frogatto - Platformer with great music and graphics. Should be available in the Ubuntu repos for free
GOAT - An arcade game about a drunken space goat!
Hurrican - Inspired by the classic game Turrican. Mostly forgotten nowadays, so you may have to compile it from here
JVGS - Minimalistic platform game.
Mega Mario, SuperTux, ReTux, Secret Maryo and The Secret Chronicles of Dr. M. - Clones of Mario. SupertTux is currently in need of help if it's to stay alive
Mr. Rescue - Play as a fireman rescuing people. Source code here for people who want to package it for their distro
OpenClonk - Weird Online 2D Mining
Parallel Universe - Minimalist Yin and Yang Platformer.
RickyD and xrick - Clones of Rick Dangerous.
Sienna - Fun little runner/platformer. Source code
Sonic Robo Blast 2 - 3D fangame based on the Sonic the Hedgehog series with many mods.
Spelunky Classic HD - Cave exploration / treasure-hunting game inspired by classic platform games and roguelikes
Super Mario War - A Super Mario multiplayer game in where the goal is to stomp as many other Marios as possible. (Switch port)
Super Methane Brothers, The Bub's Brothers - Clones of Bubble Bobble.
The Legend of Edgar - Action platformer game.
Tobu Tobu Girl - Arcade platformer where you have to save your cat who is floating into the atmosphere.

Free Open Source Software

Robocode - Programming game, where the goal is to develop a robot battle tank to battle against other tanks in Java or .NET.

1010! Klooni - Minimalistic puzzle game.
Bombman - Atomic Bomberman clone.
Atomiks - Atomix clone.
Crack Attack!, FreeBlocks and Panel Attack - Clones of the puzzle game Tetris Attack.
Cuyo - Tetris-style puzzle game for up to two players.
Gweled and Freegemas - Clones of Bejeweled.
Hextris - Puzzle game inspired by Tetris.
Lix and Rabbit Escape - Clones of Lemmings.
Mice Men: Remix - Remake of the DOS game Mice Men.
Mirror Magic - Arcade style puzzle game.
OpenBlok - Clone of Tetris.
Orbium - Clone of Log!cal.
pocico - Puzzle game where the goal is to match the outer color with the inner color in every shape.
Rocks'n'diamonds - Clone of Boulder Dash.
Sudoku JS, Open Sudoku and Nudoku - Games of Sudoku
Tanglet - Single player word-finding game based on Boggle.
The Butterfly Effect - Clone of Crazy Machines.
The lost Penguin - Guide laser beams through multiple mirrors to resolve the puzzles.
Wizznic! - A difficult puzzle game with built-in puzzle-editor.

Freeware Games

GlPortal - Clone of Portal.
Mari0 - Odd mix of Mario and Portal.
Nova the Squirrel - NES game with ability copying and puzzles.

Open Source Games

Gnomescroll, ClassiCube and Freeminer - Minecraft-clones.
Minetest - (GNU/Linux, FreeBSD, Windows, Mac & Android) - Uses C++, Requires mods to be fun
OpenSpades - Clone of the team-based first-person shooter and voxel-based sandbox Ace of Spades.
Terasology - Fancy lookin' Minecraft
TrueCraft - Clean-room implementation of Minecraft 1.7.3
Voxelands - Minecraft standard clone?
voxel.js - Tool for creating minecraft clones

Art Treachery - Stealthy art heist game.
The Dark Mod - Fan-made spin-off the the fantastic Thief series (Not suitable for low-end systems)

Bloodworks - Top-down survival action game where you fight against an endless waves of monsters.
C-Dogs SDL - Clone of the shoot 'em up C-Dogs.
Chromium B.S.U. - Fast paced, arcade-style, top-scrolling space shooter.
Dave Gnukem - Retro-style 2D scrolling platform shooter, inspired by and similar to Duke Nukem 1.
Friking Shark - Remake of the shoot 'em up game Flying Shark.
Gang Garrison 2 - Multiplayer 'demake' of Team Fortress 2.
Galaxy Forces V2 - 2D multiplayer space shooter, inspired by the Amiga classic Gravity Force.
heXon - Twin-stick-shooter for up to four players
Lisparuga - 2D shoot-em-up game inspired by Ikaruga. (GNU/Linux systems only)
M.A.R.S. - 2D space shooter.
Maelstrom - Clone of Asteroids
NightHawk - Clone of Paradroid.
Relic Hunters Zero - Online cooperative shooter/RPG. Source code
Torrega Race - Simple space game inspired by Omega Race.
Violetland - Cross-platform game similar to Crimsonland.
Watch out for Snakes - Short low poly top down retro arcade shooter.
Witch Blast - Roguelite dungeon crawl shooter heavily inspired from Binding Of Isaac.

Cart Life - Simulation game in which the player controls one of three street vendors, and attempts to run their shop whilst looking after their health, interests, and families. Source code
Coming Out Simulator 2014 - Interactive game intended to help LGBT youth to understand their sexuality.
Our Personal Space - Marriage survival sim set on a space colony in the near future.
Two Interviewees - Short visual novel about the gender gap.

Antares - Tactical space-combat game, combining elements of both arcade shooters and real-time strategy games.
Bridge Command - An interactive ship simulator.
EmptyEpsilon - A spaceship bridge simulator game
Endless Sky - 2D space trading and combat game similar to the classic Escape Velocity series
Naev - open-source game about space exploration, trade and combat
Oolite - Well done Elite remake, with plentiful mod support.
Pioneer - a remake of the sequel to Elite, Frontier.
The Pandoran War - 2D mission-based space shooter.
Ur-Quan Masters - Updated version of Star Control II. Be sure to download the Voice Pack! (Alternative HD version available here)
Vega Strike - Open Source 3D Action-Space-Sim

Open Source Games List

Bygfoot - Football/soccer management game.
Classic 8-Ball Pool - Pool game written in JS and HTML5.
FooBillard - OpenGL-based billiards simulation game.
Goal Rush - Fast paced arcade game where two-robots team will face each other to score the maximum of goals during short matchs.
YSoccer - Retro style, multi-platform soccer game.

0 A.D. (GNU/Linux, Windows, Mac) - a game of ancient warfare.
Advanced Strategic Command and Crimson Fields - Clones of the turn based strategy game Battle Isle.
Ancient Beast - A turn based strategy game similar to Heroes of Might and Magic.
Anuto - Tower defense game for Android.
Battle City - Multiplayer RTS in which you control a tank and your mission is to destroy enemy cities while defending your own.
Bos Wars - Sci-fi RTS game.
Castle-Combat - Clone of the arcade game Rampart.
Dominus - Multiplayer social strategy game. Source code
Freeciv (GNU/Linux, Windows) - A clone of Civilization II from the Sid Meier's Civilization series.
FreeCol - Clone of Colonization
Free Mars - Turn based strategy game about colonizing Mars.
FreeOrion - Clone of Master of Orion
Gigalomania - RTS MegaLoMania-like god game.
Globulation 2 - RTS featuring auto-tasking to units.
Julius - Re-implementation of Caesar III.
Liberation Circuit - Rogue A.I. Simulator.
Master of Magic/IME - Open source multiplayer Java rewrite of Simtex's classic game Master of Magic
MAXR - Remake of the real-time/turn-based strategy game M.A.X.
Mr.Boom, SDL Bomber and Bombermaaan - Bomberman clones.
Megaglest - RTS where you control the armies of one of seven different factions
Necro - A text based Virus simulator similar to Plague Inc. Source code
OpenRA - Open-Source implementation of C&C: Red Alert, Tiberian Sun, and Dune 2000
Spring: 1944 - RTS game set in the final year of WWII.
Spring RTS - RTS game engine that has a few complete games made from it, like Zero-K
Seven Kingdoms: Ancient Adversaries - GPL release of Seven Kingdoms: Ancient Adversaries
Tanks of Freedom - Turn based strategy, similar to Advance Wars on the GBA.
The Battle For Wesnoth (GNU/Linux, Windows, Mac, Android & iOS) - a turn-based strategy game with a high fantasy theme.
TripleA - Game based on Axis & Allies board game.
OpenXcom and Xenowar - Clones of the X-Com series. UFO: Alien Invasion and UFO2000 - X-Com clones.
Warzone 2100 - 3D RTS that offers campaign, multi-player, and single-player skirmish modes.
webDiplomacy - Online version of the game Diplomacy. Source code
Widelands (GNU/Linux, BSD, Windows & Mac) - A real-time strategy game focused on building an economy. Based on Settlers 2.
Wyrmsun - An interesting fantasy RTS

Armagetron Advanced - Multiplayer 3D clone of Tron.
BZFlag - 3D online multi-player tank battle game.
OpenC1 - Remake of Carmageddon

november - Short horror/escape room/walking simulator.
Slave Of God - Trippy psychedelic ride simulator.
Wave Function Collapse - Infinite, procedurally generated city, assembled out of blocks.
you used to be someone - Based on the developer experience having a major depressive episode.

Best Free Open Source Games

90 Second Portraits - Painting game
Agar.io Clone - Simple Agar.io clone.
Thrive - Game about the evolution of life.