Codename: Gordon

Codename: Gordon is a 2D side-scrolling fan project based on the Half Life universe and programmed in Flash. In this fast platformer, you assume the role of Gordon Freeman and travel through six chapters inspired by the environment in Half Life 2. All the familiar weapons and enemies are present: crowbars, pistols, grenades, the SMG, a manipulator gun, headcrabs, zombies, the infamous G-man, etc. The game even includes a fully functional buggy.

The game's controls resemble a 3D shooter. You use the keys to move and the mouse to aim (similar to Abuse), there are medic and HEV recharge stations and even the weapon selection boxes feel as if you're playing the real 3D game. Furthermore, it also features a highscore system with network support and some secrets to discover.