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OpenRCT2
simulation / management
OpenRCT2 team
2007 
Hedgewars
strategy / artillery
The Freecol Team
2011 
Strange Adventures in Infinite Space
simulation / rogue-lite
Digital Eel
2002 
Ryzom
RPG / MMORPG
Nevrax
2004 
Abuse
platformer / run and gun
Crack dot Com
1996 
DROD: Architects' Edition
puzzle
Webfoot Technologies
1996 
Liero
action / artillery
Joosa Riekkinen
1998 
LordsAWar!
strategy / turn-based tactics
LordsAWar! team
2008 
FreeOrion
strategy / 4X
FreeOrion project
- 
Endless Sky
action / space exploration
Michael Zahniser
2015 
Maze of Galious
platformer
Brain Games
2009 
Meridian 59
RPG / MMORPG
Archetype Interactive
1996 
Pioneer
simulation / space exploration
Pioneer developers
2015 
Scrabble3D
puzzle / board game
ocye
2020 
UFO: Alien Invasion
strategy / turn-based tactics
UFO: Alien Invasion Team
2010 
Scorched 3D
strategy / artillery
Gavin Camp
2001 
Return of Dr. Destructo
shooter / shoot 'em up
ZX Studio
2015 
GearHead 2
RPG / roguelike
Joseph Hewitt
2016 
Liberal Crime Squad
simulation
Bay 12 Games
2004 
C-Evo
strategy / 4X
Steffen Gerlach
1999 
UFO 2000
strategy / turn-based tactics
Ufo 2000 Crew
2004