What Halo 3 Mod Tools - MCC is
Halo 3 Mod Tools - MCC is a set of tools for building and modifying content for Halo 3 within the Master Chief Collection. The game is listed under the Action genre, with Action as its tag. The tools are developed by 343 Industries, Splash Damage, Ruffian Games, Bungie, and Saber Interactive.
Playing together
The Master Chief Collection supports Online Co-op and Online PvP, so a group can team up for cooperative sessions or face off against each other in competitive matches. The mod tools let you work on Halo 3 content that can be used with the game.
Before you start
The tools are aimed at creating and editing Halo 3 material rather than being a standalone game mode. Expect to spend time building and testing your work before jumping into sessions with friends.