2022
Numpty Physics
Windows Linux
Numpty Physics is a drawing puzzle game, where the goal is to draw shapes on a drawing to…
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Linux
2022
2003
OilWar
Windows Linux
OilWar is a 2D arcade game. The player attempts to defend an oil field in the desert from…
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2009
OldSkoolGravityGame
Linux Win
From the modern retro-revival period, OldSkoolGravityGame (2009) is documented in VG90's…
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2014
Omega
Windows Linux Mac
Omega is a Universe Simulator accessible remotely by registered users over the JSON-RPC…
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2020
Oolite
Windows Linux Mac
Oolite is a space simulation game and clone of Elite. Both the source code and media are…
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2026
Open Adventure
Linux Mac
Open Adventure is a port of Adventure 2.5 to modern C. It is being developed by Eric S.…
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2009
Open Sonic the Hedgehog
Linux Mac Win
Open Sonic the Hedgehog (2009) is a title from the modern retro-revival period,…
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2015
OpenCity
Windows Linux
OpenCity is a 3D city building game started in 2003 by Duong-Khang Nguyen, licensed under…
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2018
OpenClonk
Linux
OpenClonk is a multiplayer game invented by Matthes Bender. There are elements of…
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2016
OpenDungeons
Windows Linux
OpenDungeons is an open source, real time strategy game sharing game elements with the…
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2025
OpenHV
Windows Linux Mac
OpenHV is a mod of OpenRA that takes the Hard Vacuum sprite artwork and loosely recreates…
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2021
OpenSimulator
Linux
OpenSimulator (short OpenSim) is the server side implementation of an open virtual 3D…
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