Metal Gear Solid 2 deserves a special mention for this as well. The AI works tremendously well together, leaving a couple to cover an exit while others sweep the area room-by-room.

Well, Metal Gear had “wormholes” as ways to move from points A to B. They’ve never had alternate dimensions or crystal zombies. The series even makes a point of explaining that the supernatural doesn’t exist, with the apparent exception of psychics (and easter eggs).