Counter Strike Xtreme V13 !new!

Counter-Strike Xtreme V13: The Ultimate Single-Player & Offline CS Experience

Counter-Strike Xtreme V13 (often abbreviated as CSX V13) is a standalone, fan-made modification that takes the classic Counter-Strike 1.6 engine and supercharges it into a feature-rich, action-packed single-player and offline multiplayer experience.

: Adds a wide array of special firearms, from gold-plated AK-47s to high-tech futuristic launchers. Custom Game Modes Counter Strike Xtreme V13

If you want a comparison between V13 and other versions like V6 or V7 Counter-Strike on Steam Counter Strike Xtreme V13

Killstreaks: Features a "Combat Arms" style killstreak system with visual and audio cues. Counter Strike Xtreme V13