King of Colosseum (Green): Zero-One Disc is the second half of Spike's King of Colosseum 3D Japanese professional wrestling video game for the PlayStation 2.
This disc features wrestlers from Pro Wrestling Zero-One and Pro Wrestling NOAH.
The Green disc contains all of the same options for game modes as the Red disc. The new feature included with the Green Disc (aside from the new wrestling promotions) is the ability to "combine" the two discs into one game. When this is done, the game will combine your Red disc save and Green disc save into one file, allowing you to pit wrestlers from both discs against each other.