Here are possible titles for another Halo. Having just completed Halo 3,I thought this would be fun. It would sound dumb to just call it "Halo 4".
Halo 4: Start Another Fight
Halo 4: Naptime is over
Halo 4: Electric Boogaloo
Halo 4: Just buy it already
Halo 4: Premium edition
Halo 3: 2
Halo 2:3
Masterchief's excellent adventure
Halo 4: The Phantom Menace
Halo 4: Xbox 360 edition
Arbitar's wacky quest
Halo 64
Halo: Project YENOM
Halo 4: Money of Shooters for Make Benifit Glorious Company or Microsoft
Halo 4: Now better tasting!
Game Fuel: The Game!
Halo DS
Halo: TEH DOUL WEILD
Halo: Camel Urine in a cup?
HALO!!!!!!!!111111111!!
Halo VS. Samus
Halo part IV: Master Cheif Lives!
Halo IV
Halo