I just logged on halo 5 and read about the mongoose sumo gametype. I am able to select the map but when I try choosing the mode it doesn’t register and won’t let me start a game but when I choose from the 343 options it works. Anyone have the same issue?
Same thing here
Select 343 Strongholds, then choose Team Sumo. Also, try Warthog Sumo which works with FFA Sumo. There’s a bug with custom game modes where you need to select the base game mode first, then the custom mode.