OpenClonk is a platformer game released in 2016 designed and developed by OpenClonk team. OpenClonk can be described as a open source game and can be played on the following operating systems: Windows, Linux, Mac OSX. OpenClonk is also a multiplayer game. OpenClonk is part of the Clonk series.
“OpenClonk is a free multiplayer action game in which you control clonks, small but witty and nimble humanoid beings. The game is mainly about mining, settling and fast-paced melees.” - OpenClonk team