For ATI/AMD (Radeon) graphic card users: install - storefront
- Half-Life 2: Deathmatch [6]
- Half-Life 2: Lost Coast

For Nvidia (GeForce) graphic card users: install - storefront
- Half-Life 2: Deathmatch [6]
- Half-Life 2: Lost Coast
- Peggle Extreme (free game install - storefront)
- Portal: First Slice (demo install - storefront)

For all Steam users:
America's Army 3: install - storefront
BattleForge [1][4][7][8]: install - storefront
Between [1][4]: install - storefront
Codename Gordon: install
COIL [1]: install - storefront
Mightier [1]: install - storefront
Peggle Extreme: install - storefront
Sam & Max: Episode 4: install - storefront
TrackMania Nations Forever [2]: install - storefront

Free addons and resources for already purchased games:
Counter-Strike (Counter-Strike Steamworks Beta access) [3]: install
Half-Life (high definition models): install - uninstall - comparison - example
RACE 07 (Crowne Plaza Raceway track) [5]: install - storefront

Steam delivered MODs:
Age of Chivalry (requires Source SDK): install - storefront
D.I.P.R.I.P. Warm Up (requires Source SDK): install - storefront
Darkest Hour (requires Red Orchestra): install - storefront
Dystopia (requires Source SDK): install - storefront
Eternal Silence (requires Source SDK): install - storefront
INSURGENCY (requires Source SDK): install - storefront
Mare Nostrum (requires Red Orchestra): install - storefront
Smashball (requires Source SDK): install - storefront
Synergy (requires Half-Life 2): install - storefront
Zombie Panic! Source (requires Source SDK): install - storefront

[1] mistakenly listed as a demo on storefront
[2] already included on TrackMania United
[3] deployed and deprected, but continues working
[4] mistakenly named as a demo on "My games" list
[5] will install addon on your title and a demo to run feature standalone
[6] does not include Source SDK tool (required to run some MODs)
[7] offered by Play4Free license / micropayment
[8] storefront not available in Japan and the United Kingdom