Quando minha dica sobre o Desura (link abaixo) foi publicada, perguntaram-me se tinha jogos grátis. Eu disse que sim, e citei o exemplo de um jogo apenas.

Dessa vez, fiz uma pesquisa maior e "catei", dentre os jogos grátis, apenas os compatíveis com GNU/Linux. Cabe a você acessar o link e ver as informações de cada jogo, se desejar.

Obs.: se não sabe o que é Desura, nem como instalar, recomendo que leia a dica:

• Não há só Steam, há o Desura! [Dica]

Lista dos jogos grátis compatíveis com GNU/Linux, na Desura, até a presente data:

• http://www.desura.com/games/teenagent
• http://www.desura.com/games/smokin-guns
• http://www.desura.com/games/neverball
• http://www.desura.com/games/opentyrian
• http://www.desura.com/games/vega-strike
• http://www.desura.com/games/lure-of-the-temptress
• http://www.desura.com/games/dragon-history
• http://www.desura.com/games/triplea
• http://www.desura.com/games/ufo-alien-invasion
• http://www.desura.com/games/evolution-rts
• http://www.desura.com/games/seven-kingdoms-ancient-adversaries
• http://www.desura.com/games/sauerbraten-cube-2
• http://www.desura.com/games/iourbanterror
• http://www.desura.com/games/dwarf-fortress - feio
• http://www.desura.com/games/wolfenstein-enemy-territory
• http://www.desura.com/games/marble-arena-2
• http://www.desura.com/games/warzone-2100
• http://www.desura.com/games/neverputt
• http://www.desura.com/games/savage-2-a-tortured-soul - bonito
• http://www.desura.com/games/naev
• http://www.desura.com/games/monster-1
• http://www.desura.com/games/zombie-grinder
• http://www.desura.com/games/lariad
• http://www.desura.com/games/xonotic
• http://www.desura.com/games/tankwar
• http://www.desura.com/games/warlocks-gauntlet
• http://www.desura.com/games/incursion
• http://www.desura.com/games/revenge-of-the-cats-ethernet
• http://www.desura.com/games/ristorante-amore
• http://www.desura.com/games/openarena
• http://www.desura.com/games/world-of-padman
• http://www.desura.com/games/savage
• http://www.desura.com/games/speed-dreams
• http://www.desura.com/games/epic-inventor
• http://www.desura.com/games/alterego
• http://www.desura.com/games/creeptd
• http://www.desura.com/games/openttd
• http://www.desura.com/games/flight-of-the-amazon-queen
• http://www.desura.com/games/drscula-the-vampire-strikes-back
• http://www.desura.com/games/warsow
• http://www.desura.com/games/zero-ballistics
• http://www.desura.com/games/vertigo
• http://www.desura.com/games/mars-a-ridiculous-shooter
• http://www.desura.com/games/openclonk
• http://www.desura.com/games/abuse
• http://www.desura.com/games/stunt-rally
• http://www.desura.com/games/alien-arena-2008
• http://www.desura.com/games/flack
• http://www.desura.com/games/planeshift
• http://www.desura.com/games/tremulous
• http://www.desura.com/games/ogs-mahjong
• http://www.desura.com/games/red-eclipse
• http://www.desura.com/games/beneath-a-steel-sky
• http://www.desura.com/games/puzzle-moppet
• http://www.desura.com/games/chromium-bsu
• http://www.desura.com/games/cube-metalheart
• http://www.desura.com/games/you-have-to-name-the-expansion-pack
• http://www.desura.com/games/re-alistair

Alguns, uns dois ou três, só tem a versão BETA ou demo grátis. Mas a maioria é o jogo completo mesmo.

Abraço!