RedShift is a large, single player and cooperative campaign set in the Halo universe where you will be taken on an epic adventure through stunning environments and levels. The project is being developed by the Blimp Brigade team for Halo: The Master.
The Goldmine Campaign is a first-of-its-kind re-imagining of Halo 3. Can be played SOLO or COOP (up to 4 players). This mod utilizes halo 3’s landmines as an RNG mechanic to spawn Traps, Equipment and Unique Weapons for endless replayability. There.
Activision's new Call of Duty HQ infrastructure looks to unify multiple engine-built COD games for ease-of-use and discovery, may be similar to Halo MCC.