The equivalent of slipspace travel here are "chthonic slipgates", implying that space travel in this universe isn't a very pleasant experience. Belos - Originating from the city-state of Lacedaemon (a historical name for Sparta), the Spartans of this universe are referred to as the "Chosen" demi-gods who lead mortal armies.It's hidden in the descriptions of these armor sets, but there is a surprising amount of detail in to what these alternate versions of the Halo are like: Alternate Universe: The "Mythic" update for The Master Chief Collection introduces a range of armor sets which are inspired by fantasy and mythology.Alien Sky: Once you get to the Ark, the sky features an entire galaxy (ours, in fact).
Unlike the Rangers, which had a fair amount of freedom to move around however they liked, the Jumpers use a Jump Jet Pack and are true to their name in having flight paths that are far more predictable.
Airborne Mook: In addition to the returning Drones (and very briefly, Sentinels), Brute Jumpers are a new class that take over the roles that the Elite Rangers held in the previous game.After the End: This game kicks off just as the Covenant have killed most of humanity, with the Flood getting ready to do the same.Though in its case, they might not actually be delusions at all. The Gravemind apparently had delusions of godhood as well.