Spicing Ninja Warriors up with Halo today!
Install mods from mod.io or subscribe and download in game.
You need to be in game to download maps.

Ninja Warrior and Halo contractors EU lobby today at 18:00 UTC
Get these maps/mods
https://contractors.mod.io/poly-town1
https://contractors.mod.io/cod2-mp-carentan
https://contractors.mod.io/ninjawarrior
https://contractors.mod.io/bo1-mp-nuked
https://contractors.mod.io/splatoon2portmackerel
https://contractors.mod.io/haloweaponmod
Download maps before you join the lobby, should take 20-30minutes or something.