OpenClonk
OpenClonk is a free and open-source 2D multiplayer action game, in which the player controls small humanoids called "clonks". The main mechanics of the game include mining, settling, player vs player combat, and tactical gameplay elements. The game has been compared to Worms, The Settlers, Lemmings and Minecraft.[3][4][5] The game features a single-player and multiplayer mode, and supports cross-platform play across Microsoft Windows, Linux, and MacOS.
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Developer(s) | OpenClonk Developers |
---|---|
Initial release | 1.0 / 3 December 2010 |
Stable release | 8.1
/ 17 March 2018 |
Repository | https://git.openclonk.org/openclonk.git |
Written in | C++ |
Platform | Microsoft Windows, Linux, OS X |
Type | Single-player, Multiplayer Action |
License | ISC[1][2] (source code) CC BY-SA, CC BY, CC0 (game assets) |
Website | https://www.openclonk.org/ |
The OpenClonk project is a continuation of the Clonk game series and game engine, both of which are being actively developed. The source code is available under the ISC license[1][2] and game content is licensed under CC BY-SA, CC BY and CC0.
Gameplay
The gameplay features elements of action and tactical games. The player controls clonks, which can perform various tasks ranging from shoveling through dirt, throwing dynamite to mine gold, constructing buildings, and wielding swords. The game world consists of a dynamic and destructible landscape. The landscape is constructed out of different materials like earth, tunnels, sky, coal, ore, gold and water. Players can destroy solid materials by digging or using explosions or destroy liquids by using gravity or pumps. The various in-game objects and tools available to clonks allow for dynamic gameplay.
Gameplay is focused around two types of game rounds: Settlement and melee rounds. In settlement rounds, players need to cooperate and build up large settlements to perform certain tasks like mining gold or constructing a statue. In melee rounds, players battle each other in small arenas.
Settlement

Settlement rounds can be played cooperatively, where two or more players work towards a mutual goal. In settlement rounds, players build settlements using resources in the landscape, such as wood, metal, fire and stones. Typical challenges include inhospitable landscapes, transporting large objects, as well as natural disasters like meteors and volcanoes. Settlements and production lines allow players to construct advanced items and vehicles. As players create more advanced items, they are able to fulfill more complex tasks and achieve various goals.
Goals for settlement rounds include:
- Wealth: gain a certain amount of gold (called clunkers).
- Expansion: expand your settlement to a certain area of the landscape.
- Mining: mine a certain amount of valuables like gold or gems.
- Statue Construction: gather statue parts and construct a statue.
Melee

Melee rounds are focused on the elimination of other players. These rounds are usually short, with a typical length between 5 and 30 minutes. The player uses a single clonk to attack enemies with various weapons such as swords, bows, dynamite, grenade launchers, muskets and catapults. Melee round goals include:
- Last Man Standing: players have a limited number of respawns and must survive as long as possible.
- Deathmatch: players must achieve a certain number of kills.
- Capture the Flag: capture enemy flags and bring them to your base to gain points.
- King of the Hill: try to defend a region as long as possible.
Development
OpenClonk development began with the release of the source code of Clonk Rage in February 2009[6] and a later release under the ISC license in May 2009.[1][2] The website www.openclonk.org
was founded at the same time, acting as a portal for both development and players. The source code and game content were first hosted using a Mercurial repository, but now uses a Git repository.
The game engine is programmed in C++ and is cross-platform. The game is available on Windows, Linux and Mac OS X, and can be compiled on FreeBSD. Game content is created using the game's own scripting language C4Script,[7] and is developed simultaneously with the game engine. Since the game content and engine are completely separate, mods and completely new game content can be created by anyone using the OpenClonk engine.
Development of OpenClonk is completely open and contributions from the community are often accepted as patches.
Releases
OpenClonk is being released on a regular basis with roughly a major release every year. Major releases are published when the engine or the game content has received large modifications or important features have been added. Minor releases are done for bug fixes and small updates to the game content. The current stable version is OpenClonk 4.1 released on 16 February 2014.[8]
- OpenClonk 1.0 (3 December 2010)[9]
- OpenClonk 2.0 (1 October 2011)[12]
- OpenClonk 3.0 (14 October 2012)[15]
- OpenClonk 4.0 (26 January 2014)[19]
- OpenClonk 4.1 (16 February 2014)[8]
- OpenClonk 5.0 (5 October 2014)
- OpenClonk 6.0 (15 March 2015)
- OpenClonk 6.1 (12 June 2015)
- OpenClonk 7.0 (16 January 2016)[20]
- OpenClonk 8.0 (4 February 2018)[21]
- OpenClonk 8.1 (17 March 2018)[22]
Reception
In a popularity competition organized by the Linux Game Awards, OpenClonk received third place in the Project of the Month: March 2014.[23] Linux Format named OpenClonk in September 2015 a "HotPick".[24] Furthermore, on Desura in June 2015 OpenClonk achieved a 8.8/10 user rating.[25] German computer magazine c't added OpenClonk to a DVD shipped with their magazine in April 2011.[26]
References
- "Clonk Rage Source ISC". clonk.de. 23 May 2009.
- OpenClonk git repository: COPYING
- 5 open source remakes of classic PC games you won't want to miss by Mike Williams on betanews.com "2. OpenClonk is a free, open-source multiplayer version of RedWolf Design’s "Clonk". [...] (think Minecraft, Terraria, Worms or Settlers), it’s great fun if you’re a fan of those games, and OpenClonk’s powerful customization tools means it’s easy to extend the program with new maps and scenarios." (May 2015)
- САЙТ GAMELAND ONLINE (www.gameland.ru) Журналы : CD №17 (98) "This game has no plot! [...] It would be appropriate in this respect to compare with "Tetris", "Lemmings" and other "plotless" masterpieces. But the game has a name - "Clonk"." (archived)
- Matthes Bender packt aus (echt jetzt!) on rebell.at by Sigfried Arnold (in German, February 26, 2007)
- "Clonk Rage Source Released". clonk.de. 22 February 2009.
- "C4Script Documentation". openclonk.org. 28 June 2014.
- "OpenClonk 4.1 Release". openclonk.org. 16 February 2014.
- "OpenClonk 1.0 Release". openclonk.org. 3 December 2010.
- "OpenClonk 1.1 Release". openclonk.org. 28 December 2010.
- "OpenClonk 1.2 Release". openclonk.org. 12 February 2011.
- "OpenClonk 2.0 Release". openclonk.org. 1 October 2011.
- "OpenClonk 2.1 Release". openclonk.org. 10 October 2011.
- "OpenClonk 2.2 Release". openclonk.org. 10 February 2012.
- "OpenClonk 3.0 Release". openclonk.org. 14 October 2012.
- "OpenClonk 3.1 Release". openclonk.org. 15 October 2012.
- "OpenClonk 3.2 Release". openclonk.org. 18 November 2012.
- "OpenClonk 3.3 Release". openclonk.org. 10 March 2013.
- "OpenClonk 4.0 Release". openclonk.org. 26 January 2014.
- "OpenClonk 7 released". openclonk.org. 15 January 2016.
- "OpenClonk 8 released". openclonk.org. 4 February 2018.
- "OpenClonk 8.1 released". openclonk.org. 17 March 2018.
- "Project of the Month: March 2014". Linux Game Awards. 26 February 2014.
- Linux Format 202 September 2015
- "OpenClonk on Desura". Desura. 9 May 2015. Archived from the original on 9 May 2015.
- "OpenClonk on c't DVD" (PDF). heise.de. 29 June 2014.