Halo 3 Epsilon

From Halopedia, the Halo wiki

A Gamercard demonstrating one of the first players of Halo 3 Epsilon.

Halo 3 Epsilon[1] is believed to be a Halo 3 build.

It was released to Microsoft employees as of August 10, 2007, and featured Forge and multiplayer modes[2].

[3]