Para usuarios con ATI/AMD (Radeon): install steam://hardwarepromo/305 - en steam
- Half-Life 2: Deathmatch
- Half-Life 2: Lost Coast

Para usuarios con Nvidia (GeForce): install steam://hardwarepromo/609
- Half-Life 2: Deathmatch
- Half-Life 2: Lost Coast
- Portal: First Slice (demo install steam://install/410 )

Para todos los usuarios de Steam:

Alien Swarm: install steam://install/630
America's Army 3: install steam://install/13140
BattleForge [4][7][8]: install steam://install/24770
Between [4]: install steam://install/29140
Codename Gordon: install steam://install/92
COIL : install steam://install/31500
Mightier : install steam://install/29150
Moonbase Alpha: install steam://install/39000
Peggle Extreme: install steam://install/3483
Sam & Max: Episode 4: install steam://install/8230
Spacewar: install steam://install/480
TrackMania Nations Forever : install steam://install/11020

Recursos y addons gratis para juegos previamente adquiridos:
Half-Life (high definition models): install steam://installaddon/halflifehd - uninstall steam://removeaddon/halflifehd
RACE 07 (Crowne Plaza Raceway track) : install steam://install/8670

Mods de Steam:

Age of Chivalry (requiere Source SDK): install steam://install/17510
D.I.P.R.I.P. Warm Up (requiere Source SDK): install steam://install/17530
Darkest Hour (requiere Red Orchestra): install steam://install/1280
Defence Alliance 2 (requiere Killing Floor): install steam://install/35420
Dystopia (requiere Source SDK): install steam://install/17580
Eternal Silence (requiere Source SDK): install steam://install/17550
INSURGENCY (requiere Source SDK): install steam://install/17700
Mare Nostrum (requiere Red Orchestra): install steam://install/1230
Pirates, Vikings, and Knights II (requiere Source SDK): install steam://install/17570
Smashball (requiere Source SDK): install steam://install/17730
Synergy (requiere Half-Life 2): install steam://install/17520
Zombie Panic! Source (requiere Source SDK): install steam://install/17500

Otras cosas relacionadas:

BioShock: Breaking the Mold : download
Company of Heroes: All Heroes Rise OST : download
Company of Heroes: Songs From the Front OST : download
GREED: Black Border OST : download - en steam
Warhammer 40,000: Dawn of War II OST : download
Zombie Movie [Mac/Win][Mov]: install steam://install/900


aclaracion para descargarlos copian ej steam://install/85135 y los buscan con google apretan el el primero y listo