Counter-Strike: Source

(C) 2004 Valve Corporation. All rights reserved. Valve, the Valve logo, Half-Life, the Half-Life logo, the Lambda logo, Steam, the Steam logo, Team Fortress, the Team Fortress logo, Opposing Force, Day of Defeat, the Day of Defeat logo, Counter-Strike, the Counter-Strike logo, Source, the Source logo, Valve Source and Counter-Strike: Condition Zero are trademarks and/or registered trademarks of Valve Corporation.

[Reported by 中村聖司]