When there is a newer version, I'll stop seading and upload the new one instead.
 
http://www.cs2d.com/

     What is Counter-Strike 2D?
Counter-Strike 2D is more than just a freeware 2D clone of the most famous tactical multiplayer shooter ever! You can play it like Counter-Strike by Valve Software. Plant and defuse bombs, rescue hostages or escort the V.I.P.! In addition to the original Counter-Strike map types (as, cs, de) you can play some new map types like ctf (Capture the Flag) or dom (Domination). Moreover you have different game modes in Counter-Strike 2D. Why don't you play a fast-paced deathmatch session? There's also a construction mode in CS2D! Build walls, barbed wire and turrets to protect your base! Even a zombie mode is included!


     Features
- Online Gaming (WWW & Lan)
- Offline Gaming with and versus Bots
- All Weapons from Counter-Strike
- Different Missions such as Hostage Rescue or Bomb Planting
- 3D accelerated Special FX 
- 3D Sounds
- Fog of War for tactical Gaming
- Dynamic Entity System with Triggers
- Console & Scripting
- Easy to use Map Editor
- U.S.G.N. (Unreal Software Gaming Network) Support
- New Map-Types like Capture the Flag and Domination
- New Game Modes like Deathmatch, Team Deathmatch, Construction and Zombies!
- Many additional Weapons like RPG-Launcher, Laser, Molotov Cocktail, ... and many more!


     Who made it?
Counter-Strike 2D is a freeware game by Peter Schauß / Unreal Software.
It's in development for over five years already!
Please visit Unreal Software at UnrealSoftware.de!