OpenRA by OpenRA

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

created at Oct. 4, 2010, 7:38 a.m.

C#

383 +1

14,220 +13

2,626 +1

GitHub
OpenRCT2 by OpenRCT2

An open source re-implementation of RollerCoaster Tycoon 2 🎢

created at April 1, 2014, 11:32 p.m.

C++

204 -1

12,998 +15

1,499 +0

GitHub
openage by SFTtech

Free (as in freedom) open source clone of the Age of Empires II engine 🚀

created at Nov. 3, 2013, 10:35 p.m.

Python

401 -1

12,427 +7

1,106 +1

GitHub
devilution by diasurgical

Diablo devolved - magic behind the 1996 computer game

created at April 2, 2018, 1:01 a.m.

C++

252 +1

8,643 +3

922 +0

GitHub
devilutionX by diasurgical

Diablo build for modern operating systems

created at Aug. 2, 2018, 5:19 p.m.

C++

191 +1

7,580 +13

747 +0

GitHub
VVVVVV by TerryCavanagh

The source code to VVVVVV! http://thelettervsixtim.es/

created at Oct. 16, 2015, 6:17 p.m.

ActionScript

73 +0

6,852 +5

549 +1

GitHub
OpenTTD by OpenTTD

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

created at April 6, 2018, 6:06 p.m.

C++

109 +2

6,001 +24

839 +6

GitHub
openmw by OpenMW

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/

created at Aug. 23, 2009, 2:46 p.m.

C++

273 +0

5,181 +9

928 +0

GitHub
OpenSC2K by nicholas-ochoa

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

created at Feb. 3, 2018, 2:38 a.m.

JavaScript

153 +0

4,946 +2

84 +0

GitHub
runelite by runelite

Open source Old School RuneScape client

created at April 30, 2016, 8:48 p.m.

Java

99 +0

4,607 +20

5,145 +2

GitHub
OpenLara by XProger

Classic Tomb Raider open-source engine

created at Aug. 13, 2016, 10:06 p.m.

C

160 +0

4,600 +8

360 +0

GitHub
zelda3 by snesrev

None

created at Aug. 11, 2022, 1:11 a.m.

C

92 +0

4,135 +3

344 +0

GitHub
vcmi by vcmi

Open-source engine for Heroes of Might and Magic III

created at April 6, 2014, 1:42 p.m.

C++

119 -1

3,990 +11

442 +1

GitHub
CorsixTH by CorsixTH

Open source clone of Theme Hospital

created at Aug. 25, 2013, 6:16 p.m.

Lua

125 +0

3,915 +27

355 +1

GitHub
warzone2100 by Warzone2100

Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+

created at Nov. 16, 2010, 4:36 a.m.

C++

115 -1

3,060 +8

516 +1

GitHub
daggerfall-unity by Interkarma

Open source recreation of Daggerfall in the Unity engine

created at Jan. 6, 2015, 9:18 p.m.

C#

131 -1

2,608 +9

324 +3

GitHub
julius by bvschaik

An open source re-implementation of Caesar III

created at Aug. 19, 2017, 8:48 p.m.

C

84 +0

2,565 +3

297 +2

GitHub
wipeout-rewrite by phoboslab

None

created at Aug. 10, 2023, 11:14 a.m.

C

34 +0

2,546 +1

193 +0

GitHub
fheroes2 by ihhub

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

created at Aug. 30, 2019, 3:05 p.m.

C++

51 +0

2,539 +10

356 +1

GitHub
ioq3 by ioquake

The ioquake3 community effort to continue supporting/developing id's Quake III Arena

created at Dec. 31, 2012, 8:11 p.m.

C

130 +0

2,316 +5

521 +0

GitHub