Play open source games
A freeware game is a game you can play completely for free with no payments needed: no microtransactions, no subscription fees.
OpenTTD
simulation / management
OpenTTD Team
Cataclysm: Dark Days Ahead
RPG / roguelike
Kevin Granade
Unknown Horizons
simulation / city building
The Unknown Horizons Developers
Battle for Wesnoth
strategy / turn-based tactics
David White
0 A.D.
strategy / real-time strategy
Wildfire Games
Angband
RPG / roguelike
Angband Development Team
Dungeon Crawl Stone Soup
RPG / roguelike
DCSS Devteam
Hurrican
platformer / run and gun
Poke53280
FreeCol
strategy / 4X
The Freecol Team
Alien Arena
shooter / first-person shooter
COR Entertainment
TomeNET
RPG / roguelike
TomeNET team
Warsow
shooter / first-person shooter
Warsow Team
Widelands
strategy / real-time strategy
Widelands Development Team
Mirror Magic
puzzle
Artsoft Entertainment
OpenRCT2
simulation / management
OpenRCT2 team
Dungeon Craft
RPG / old school RPG
Dungeon Craft Team
OpenClonk
platformer
OpenClonk team
Simutrans
simulation / management
Simutrans Development Team
Xonotic
shooter / first-person shooter
Team Xonotic
Sextris
puzzle / tile-matching
Sextris
TORCS
simulation / racing
TORCS Team