Warzone of course that one way to boost your K/D and breakout for serious teamwork
Warzone! And then BTB when it releases.
Halo 5.
Deffenetly warzone, all out war between two factions on a god scale map compared to previous installments with enemy AI thrown in is going to be glorious<3333333
Rumble Pit has always been my favourite.
I’m looking forward to trying out Warzone. After I finish the campaign of course.
Overall, probably Arena for the competitive nature. Warzone will be a great warm up though.
ALL OF THEM!
Warzone.
I’m so glad competitive arena is back but I really am digging warzone. I’ll be going back and forth between the two and hopefully there will be infection gametypes as well.
Warzone, it looks really fun
I’ll be going for Warzone to try it but mostly will be in Breakout. But before all else comes Campaign
warzone and break out have me the most excited, I’m excited for all of it but those two stand out for me.
Breakout for sure.
Dude… Campaign… Let the Halo Universe come further into the light.
Warzone. Seems like the natural progression from Invasion in Reach. I had high hopes for that but it was clearly missing something. A.I. enemies and the REQ system may well be what it was missing.
Infection…oh wait…no not that…It would have to be Team Doubles…damn, not that either. Probably Warzone then 
Doubles when it comes out…whenever that is… 
All there maps are too big for Doubles (well most), so I’m guessing they’ll have to wait till a bunch of forge maps get made for it… ugh!
Till then anything in Arena of course, but mainly Slayer lol That’s where real Spartans go! not this…“warzone” place 
(it’s good too, just too casual for me :P)
Campaign. I want to see what happens to Master Chief; after that Warzone and CTF.
for me its swat cant wait to put bullets between peoples eyes