In all honesty, Halo Reach is my favorite for a couple of reasons:
- The custom spartan I design is what I play in the campaign (I’m an ABSOLUTE sucker for character customization).
- Forge, and the map Forge World. The things my friends and I would make there were wacky and amazing, and despite the improved forge in Halo 4, I’d choose Halo Reach over it any day. (I can’t give an opinion on Halo 5’s forge since I’ve never played it myself).