CS2D

 
Free Top-Down Multiplayer Shooter
Plant and defuse bombs, rescue hostages or accomplish new missions like capture the flag or domination! Use a huge arsenal of weapons and equipment including crazy stuff like portal guns, lasers, RPGs, turrets and much more! You can even build things! 
Key Features:

•	Fast paced online action (or offline against bots!)

•	All original Counter-Strike 1.6 weapons and many more

•	Many modes: CS-like, DM, Zombies, Construction…

•	Easy to use map editor with entity/trigger system

•	Console & buy scripts like the real CS

•	Modify & extend with Lua scripts

•	Many active players around the world, loads of custom maps and scripts!