Lessons from Open-Source Game Projects

1. Unvanquished

   1 13 1,032 9.6 C++

   An FPS/RTS hybrid game powered by the Daemon engine (a combination of ioq3 and XreaL)

   

   Unvanquished - FPS arena game with some RTS elements. C++, libRocket

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. Vangers

   2 15 702 3.1 C++

   The video game that combines elements of the racing and role-playing genres.

   

   Vangers - Racing Game with Role-Playing elements, available on Steam. C++, C, SDL2

4. bemuse

   3 12 1,183 0.0 TypeScript

   ⬤▗▚▚▚ Web-based online rhythm action game. Based on HTML5 technologies, React, Redux and Pixi.js.

   

   Bemuse - Web-based rhythm game. Typescript, Javascript, React, Redux, PixiJS

5. openmw

   4 50 5,821 9.9 C++

   OpenMW is an open-source open-world RPG game engine that supports playing Morrowind. Main repo and issue tracker can be found here: https://gitlab.com/OpenMW/openmw/

   

   OpenMW - The Elder Scrolls Morrowind clone. C++, OpenGL

6. Ikemen-GO

   5 11 1,042 9.8 Go

   An open-source fighting game engine that supports MUGEN resources.

   

   Ikemen-GO - Remake of the IKEMEN (open-source fighting games engine that supports M.U.G.E.N resources). GO, GLFW, OpenGL

7. carnage3d

   6 1 498 0.0 C++

   Reimplementation of Grand Theft Auto 1 [GTA1]

   

   Carnage3D - GTA 1 clone. C++, C, GLFW, GLEW, Box2D

8. re3

   7 10 2,876 0.0 C++

   Discontinued [UnavailableForLegalReasons - Repository access blocked] (by halpz)

   

   RE3 - GTA 3 clone. C++, DX9, OpenGL

9. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

10. SanAndreasUnity

    8 1 2,027 - C#

    Discontinued Open source reimplementation of GTA San Andreas game engine in Unity [Moved to: https://github.com/in0finite/SanAndreasUnity] (by GTA-ASM)

    San Andreas Unity - GTA San Andreas clone in Unity. C#

11. donut

    9 11 442 0.0 C++

    Open source reimplementation of The Simpsons: Hit & Run (by plowteam)

    

    donut - Simpson's Hit & Run clone. C++, OpenGL, SDL2

12. OpenMB

    10 1 128 3.4 C#

    Open Source role-playing game engine for Taleworlds' Mount&Blade Series written in C# using Ogre3d Engine

    

    OpenMB - Mount & Blade clone. C#, Oger3D

13. OpenTomb

    11 1 1,409 0.0 C++

    Discontinued An open-source Tomb Raider 1-5 engine remake

    

    OpenTomb - Tomb Raider 1-5 clone. C++, C, Lua, OpenGL, SDL2

14. RigelEngine

    12 8 945 6.2 C++

    A modern re-implementation of the classic DOS game Duke Nukem II

    

    Rigel Engine - Duke Nukem 2 clone. C++, C, OpenGL, SDL2

15. doomretro

    13 6 715 9.8 C

    The classic, refined DOOM source port. For Windows PC.

    

    Doom Retro - Doom source port for Windows. C, SDL2

16. supertux

    14 7 2,658 9.7 C++

    SuperTux source code

    

    SuperTux - Platformer inspired by Mario Brothers. C++, SDL2

17. TSC

    15 1 213 7.1 C++

    An open source two-dimensional platform game. (by Secretchronicles)

    

    The Secret Chronicles of Dr M - 2D Platformer. C++, OpenGL, SFML

18. godot-platformer-2d

    16 2 664 0.0 GDScript

    2d Metroidvania-inspired game for the 2019 GDquest Godot Kickstarter course project.

    

    Godot Open 2D Platformer - Metroidvania inspired Platformer made with Godot. GDScript, Godot

19. Commander-Genius

    17 1 - -

    Commander Genius - Commander Keen 1-6 clone. C++, OpenGL, SDL2

20. jazz2-native

    18 3 613 9.8 C++

    🎮 · Jazz² Resurrection: Native C++ reimplementation of Jazz Jackrabbit 2

    

    Jazz 2 Resurrection - Jazz Jack Rabbit 2 clone. C++, OpenGL, SDL2

21. nxengine-evo

    19 16 514 4.3 C

    nxengine refactoring

    

    nXEngine-evo - Cave Story clone. C++, SDL2

22. SDLPoP

    20 16 1,173 6.5 C

    An open-source port of Prince of Persia, based on the disassembly of the DOS version.

    

    SDLPoP - Prince of Persia clone based on DOS disassembly. C, SDL2

23. zelda3

    21 64 4,397 4.9 C

    

    Zelda3 - Zelda 3 clone. C, SDL2

24. ZQuestClassic

    22 11 485 9.8 C++

    ZQuest Classic is a game engine for creating games similar to the original NES Zelda

    

    ZQuest Classic - Engine to play and create games like the original Zelda. C++, OpenGL

25. scummvm

    23 167 2,490 10.0 C++

    ScummVM main repository

    

    ScummVM - Engine to run DOS Point & Click Adventure games. C++, SDL2, OpenGL

26. rawgl

    24 4 141 7.8 C++

    Discontinued Another World/Out of This World engine reimplementation (SDL, OpenGL)

    raw(gl) - Another World clone. C++, SDL2

27. angband

    25 21 1,406 9.2 C

    A free, single-player roguelike dungeon exploration game

    

    Angband - Roguelike Dungeon Crawler. C

28. A Dark Room

    26 8 7,646 3.3 JavaScript

    A Dark Room - A Minimalist Text Adventure

    

    A Dark Room - Text Adventure with survival and city-building elements. JavaScript

29. ranviermud

    27 14 813 0.0 JavaScript

    A node.js based MUD game engine

    

    Ravenier - MUD server (text-based MMORPG). Javascript, Node.js

30. evennia

    28 43 1,908 9.5 Python

    Python MUD/MUX/MUSH/MU* development system

    

    Evennia - MUD server (text-based MMORPG). Python

31. CoffeeMud

    29 3 209 9.8 Java

    Full featured, mature MUD supporting MSP, MXP, OLC, with a web server, mail server, and MORE!

    

    CoffeeMud - MUD server (text-based MMORPG). Java

32. Mudlet

    30 14 804 9.6 C++

    ⚔️ A cross-platform, open source, and super fast MUD client with scripting in Lua

    

    Mudlet - Client to connect to a MUD server, scriptable. C++, Lua

33. RenPy

    31 189 5,667 9.9 Ren'Py

    The Ren'Py Visual Novel Engine

    

    Ren'Py - Visual Novel Engine. Python, Cython, C

34. LearnToCodeRPG

    32 1 1,073 0.6 Ren'Py

    Discontinued A visual novel video game where you learn to code and get a dev job 🎯

    

    Learn to Code RPG - Visual Novel that teaches you to code, created with Ren'Py. Ren'Py, Python

35. Bathory

    33 1 1 - Ren'Py

    Visual novel, initially made for Narrative Driven Jam 7

    

    Bathory - Visual Novel created with Ren'Py. Ren'Py

36. TheParallaxDoor

    34 1 0 - Ren'Py

    Visual Novel Game with specially designed assets for the game

    

    The Parallax Door - Visual Novel created with Ren'Py. Ren'Py

37. flare-engine

    35 3 1,148 9.1 C++

    Free/Libre Action Roleplaying Engine (engine only)

    

    Flare Engine - ARPG Engine inspired by Diablo 2. C++, SDL2

38. flare-game

    36 16 1,170 6.6 CMake

    Fantasy action RPG using the FLARE engine

    

    Flare Game - ARPG, the Flare engine was created for. Plain Text, Python

39. OpenDiablo2

    37 15 10,063 8.3 Go

    Discontinued An open source re-implementation of Diablo 2

    

    OpenDiablo2 - Diablo 2 clone. Go

40. OpenEnroth

    38 15 775 9.8 C++

    Open reimplementation of Might and Magic 6 7 8 game engine

    

    OpenEnroth - Might&Magic VI-VIII clone. C++, OpenGL

41. OpenGothic

    39 27 1,312 9.4 C++

    Reimplementation of Gothic 2 Notr

    

    OpenGothic - Gothic 2 clone. C++, DX12, Vulkan, Metal

42. OpenVIII-monogame

    40 1 666 3.7 C#

    Open source Final Fantasy VIII engine implementation in C# working on Windows and Linux (Android and iOS planned too!) [Monogame]

    

    OpenVIII - Final Fantasy VIII clone. C#, MonoGame

43. riiablo

    41 3 1,001 7.1 Java

    Diablo II remade using Java and LibGDX

    

    Riiablo - Diablo 2 clone. Java, LibGDX, OpenGL

44. mangos-classic

    42 7 962 9.1 C++

    C(ontinued)-MaNGOS (Classic fork) is about: -- Doing WoW-Emulation Right!

    

    CMangos Classic - World of Warcraft: Classic server emulation. C++

45. azerothcore-wotlk

    43 46 7,220 10.0 C++

    Complete Open Source and Modular solution for MMO

    

    Azerothcore - World of Warcraft: Wrath of the Lich King server emulation. C++

46. runelite

    44 329 5,024 9.8 Java

    Open source Old School RuneScape client

    

    Runelite - Open Source old-school RuneScape client. Java

47. ryzomcore

    45 4 382 6.1 C++

    Ryzom Core is the open-source project related to the Ryzom game. This community repository is synchronized with the Ryzom Forge repository, based on the Core branch.

    

    Ryzom - Commercial MMORPG available on Steam went open source. C++

48. OpenTTD

    46 254 6,987 9.9 C++

    OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

    

    OpenTTD - Open source simulation game based upon Transport Tycoon Deluxe. C++, SDL2

49. rigs-of-rods

    47 4 1,077 9.6 C++

    Main development repository for Rigs of Rods soft-body physics simulator

    

    Rogs of Rods - Soft-body physics simulator mainly targeted at simulating vehicle physics. C++, OpenGL

50. FreeSO

    48 23 888 8.4 C#

    Re-implementation of The Sims Online.

    

    FreeSO - The Sims Online and The Sims 1 clone. C#

51. OpenRCT2

    49 208 14,430 9.9 C++

    An open source re-implementation of RollerCoaster Tycoon 2 🎢

    

    OpenRCT2 - Roller Coster Tycoon 2 clone. C++, SDL2, OpenGL

52. Librelancer

    50 10 536 9.6 C#

    A re-implementation of Freelancer

    

    Librelancer - Freelancer clone. C#, OpenGL

53. fs2open

    51 9 - -

    fs2open - FreeSpace 2 clone. C++, SDL2

54. CorsixTH

    52 27 4,194 9.3 Lua

    Open source clone of Theme Hospital

    

    CrosixTH - Theme Hospital clone. Lua, C++

55. keeperfx

    53 24 836 9.7 C

    Open source remake and Fan Expansion of Dungeon Keeper.

    

    Keeper FX - Dungeon Keeper clone. C

56. keeperrl

    54 3 916 9.6 C++

    Source code of KeeperRL

    

    KeeperRL - Dungeon Keeper inspired, available on Steam. C++

57. openage

    55 57 13,691 9.5 Python

    Clone of the Age of Empires II engine 🚀

    

    [openage]https://github.com/SFTtech/openage) - Age of Empires II clone. Python, C++

58. 0ad

    56 142 2,733 9.2 C++

    Discontinued [DEPRECATED] Git mirror of the 0 A.D. SVN source code (migrated to https://gitea.wildfiregames.com on August 20th 2024)

    

    0. A.D. - RTS. C++, C

59. godot-port

    57 9 765 3.2 GDScript

    Unknown Horizons Godot Engine Port

    

    Unknown Horizons - Real-time strategy and city-building game. Godot, GDScript

60. fheroes2

    58 151 2,963 9.8 C++

    fheroes2 is a recreation of Heroes of Might and Magic II game engine.

    

    fhearos2 - Heroes of Might and Magic II clone. C++, SDL2

61. glsmac

    59 9 505 9.5 C++

    Unofficial open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri ( + Alien Crossfire )

    

    GLSMAC - Sid Meier's Alpha Centauri clone. C++, OpenGL, SDL2

62. julius

    60 74 2,963 8.3 C

    An open source re-implementation of Caesar III

    

    Julius) - Caesar 3 clone. C, SDL2

63. openblack

    61 17 1,376 8.1 C++

    openblack is an open-source game engine that supports playing Black & White (2001).

    

    openblack - Black & White clone. C++, OpenGL, Vulkan

64. OpenSC2K

    62 3 5,010 10.0 JavaScript

    OpenSC2K - An Open Source remake of Sim City 2000 by Maxis

    

    OpenSC2K - Sim City 2000 clone. JavaScript, TypeScript, WebGL canvas, Physer 3

65. OpenXcom

    63 64 2,012 6.4 C++

    Open-source clone of the original X-Com 👽

    

    OpenXCOM - XCOM clone. C++, SDL2

66. s25client

    64 3 515 9.4 C++

    Return To The Roots (Settlers II(R) Clone)

    

    Return to the Roots - The Settlers 2 clone. C++, SDL2

67. Sourcehold

    65 2 267 3.6 C++

    Open source re-implementation of Stronghold 1

    

    Sourcehold - Stronghold 1 clone. C++, SDL2

68. vcmi

    66 68 5,007 10.0 C++

    Open-source engine for Heroes of Might and Magic III

    

    VCMI - Heroes of Might and Magic III clone. C++, SDL2

69. warcraft-remake

    67 1 - -

    Warcraft Remake - Warcraft: Orcs & Humans clone. Java

70. Mindustry

    68 272 24,278 9.9 Java

    The automation tower defense RTS

    

    Mindustry - The automation tower defence RTS. Java

71. Minetest

    69 126 11,587 9.9 C++

    Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

    

    Minetest - Minecraft-inspired voxel game engine. C++

72. Terasology

    70 18 3,733 6.7 Java

    Terasology - open source voxel world

    

    Terasology - Minecraft-inspired voxel game. Java

73. sandspiel

    71 23 3,047 3.1 Rust

    Creative cellular automata browser game

    

74. The-Powder-Toy

    72 71 4,833 9.4 C++

    Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.

    

    The Power Toy - Physics Sandbox. C++, SDL2

75. stk-code

    73 22 4,800 9.6 C++

    The code base of supertuxkart

    

    SuperTuxKart - Mario Kart inspired racing game. C++, C, OpenGL, SDL2

76. pokerth

    74 3 540 7.9 C++

    PokerTH is a poker game written in C++/Qt.

    

    PokerTH - Poker Game. C++, QT5

77. lila

    75 825 16,821 10.0 Scala

    ♞ lichess.org: the forever free, adless and open source chess server ♞

    

    Lichess - Online Chess Server. Scala, TypeScript

78. Enigma

    76 1 149 7.2 C++

    Enigma is a puzzle game inspired by Oxyd on the Atari ST and Rock'n'Roll on the Amiga. The object of the game is to find uncover pairs of identically colored Oxyd stones. Simple? Yes. Easy? Certainly not! Hidden traps, vast mazes, laser beams, and, most of all, countless hairy puzzles usually block your direct way to the Oxyd stones … (by Enigma-Game)

    

    Enigma - Puzzle Game. C++, C, SDL2

79. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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