The Long awaited tech demo for Valves HL2 High Dynamic Range Lighting has been released for download on steam. Its a quick download, featuring HL2 gameplay. Eager for more HL2? Get it while its hot.
quote from
http://www.steampowered.com/"STEAM NEWS
VALVE NEWS
Half-Life 2: Lost Coast Available Now
October 27, 2005, 4:10 pm · Alfred Reynolds
Half-Life 2: Lost Coast is now available for play for all Half-Life 2 owners.
Half-Life 2: Lost Coast, a single-player level custom-created to showcase High-Dynamic Range lighting (HDR) in the Source engine, is available now to all owners of HL2. As a technology showcase, Half-Life 2: Lost Coast's system requirements are very high. During installation, Steam will prompt you if your system does not meet the recommended configuration. We hope you enjoy it."