The scrapped Call of Duty Halo collaboration would've seen Halo maps appear in Call of Duty according to leaks.

These include the first Night Vision map, bringing back NVG gameplay that was introduced in Modern Warfare 2019 ... Too bad the old Gulag isn’t joining the rotation of Gunfight maps!

A new set of Call of Duty leaks has revealed that the scrapped collab with Halo in Modern Warfare 3 would have brought some iconic maps to the game. And, well, fans are gutted.

4 new 6v6 “Core” multiplayer maps are coming to Modern Warfare III ... Of course, Das Haus isn’t an old map. It’s from Sledgehammer’s last game, Call Of Duty: Vanguard, but reimagined ...