Counter-Strike: Condition Zero PC CD-ROM 2-Disc Game Sourced from a thrift/estate sale. Basic visual inspection only. Compatibility and performance verification is the buyer's responsibility. Counter-Strike: Condition Zero for PC. 2-disc CD-ROM set published by Sierra, developed by Valve and Ritual Entertainment. Rated M for Mature. CD key is included. Pre-owned with no visible wear to the discs or inserts. Jewel case has minor surface scratches from handling but is intact and holds the discs securely. #counterstrike #conditionzero #pcgame #valve #sierra