Hmmm... good story... looks like they could use some more variety in ground troops though. Fallout, perhaps? All the main characters and their support, BoS, Mr House's forces, Institute, NCR, Minutemen, etc. Cheap power armor, compact nuclear tech, various exotic energy weapons, powerful kinetic weapons. Deus Ex - tons of implants to enhance the forces. Red Faction - lots of real exotic weapons.

Why not have the Spartan III's? There's about 900 dead SIII's, good boost to their numbers.

You really nerfed the SGC/Asgard team. Anubis gets his entire fleet and motherships, Asgard/SGC get... shit? The other groups had all their ships and lost lives restored from the entire history of their conflict. Asgard have been fighting the Replicators for Centuries. I'm sure they've lost thousands of ships, either destroyed by them or the Replicators, or taken over by the Replicators, or consumed by the replicators. They probably have more ships than the UNSC and Covenant combined. As for numbers, they have at least hundreds of millions of Asgard minds stored on their computers. Plus there's the tech advantage. An Asgard O'Neill class with all the tech they had before they died would have been 10-50 times more powerful than the Odyssey with a ZPM.

The Vanir are also asgard, have more combat experience, and have ships as well (even if they aren't as advanced). They also have some of the best personal armor, on par with the Krull armor.

Then there's the SGC nerfing. They shohuld have had every ship they've ever captured or made given to them. Prometheus, Daedalus, Reality Jumping Daedalus, Odyssey, Korolev, Apollo, Sun Tzu, George Hammond, Atlantis, The Tower (iffy), Discenna (City-Ship), Aurora, Orion, Tria, Traveller's Aurora, Avenger (Lantean Cruiser), Destiny, Duplicate Destiny, Seed Ship(s), 3x Hive Ships captured by Atlantis, Wraith Cruiser captured by Atlantis (Eternal), Wraith Supply Ship (modified cruiser from Light Bugs' Planet), Wraith Cruiser (Lantean ocean floor), 2x Ha'taks captured by SG-1, Needle Threader, SG-1's Tel'Tak, Vala's Tel'tak, Ronan's Tel'Tak, Selmak's Tel'tak, Osiris' Al'kesh, Vala's Al'kesh, Teal'c's Al'kesh, Jonathan J O'Neill's Al'kesh.

That's 1 BC-303, 6-7 BC-304, 2-3 City Ships, 4 Alteran Aurora's, 1 Alteran Cruiser, 1-2 Destiny's, 1 Seed ship, 3 Wraith Hive ships, 3 Wraith Cruisers, 2 Ha'taks, 4 Al'kesh, 4 Tel'tak, and 1 Needle Threader.

And let's not forget Harlan's Robo SG1, Clone O'neill, Organic Asuran AR-1 and Elizabeth Weir.

Then there's ancient allies you could have given them. Crew of the Aurora, Crew of the Tria, Moros, Orlin, Janus (who time travelled to the future).

And all their other allies. Free Jaffa and their fleet, Tok'ra, Tollans, Martin's People and their ships, Satedans, Reformed Ori Followers, Lanteans, Niam's Faction Asurans (and their ships: Niam's Faction City-Ship, Niam's Faction Aurora).

Is the base Forerunner or Ancient technology? There's no evidence Forerunners had ZPM's, and they said the interface was similar to Atlantis, so it sounds more like Ancient tech. If so, why keep calling it Forerunner? And if not, why keep calling them ZPM's?

Why didn't Thor just use the Asgard dematerialization beam (like they used on the Thor's Hammer planet) to get rid of the flood?

The Covenant ships don't use subspace for communications. Each fleet has a special ship with a SLIPspace communication device.

Some additional enemies you could include, to help the evil Machine/AI faction: Regular Asurans, Nanite Replicators from Asgard Galaxy, Drone race from Destiny, the Created from Halo 5, 343 Guilty Spark, Cylons, Cybermen, The Matrix and its forces, MCP (Tron), Decepticons, Lore (Star Trek), HAL 9000, Ultron

An extra factor you could introduce to help the UNSC (given their tech disadvantage): Mendicant Bias,

An extra factor you could introduce to help the Covenant: Ur-Didact

New factions: Prehistoric Humanity, Forerunners (with Offensive Bias, Iso-Didact, Librarian, master builder, etc.), Colonials (BSG 2003 AND Original BSG), Autobots

Sir or madame, please continue this story. I loved every part of it.

If you don't remember properly the augmentations the Spartans received reduced the sexual drive to practically nothing and efficiently neutering them meaning mater chief and Linda can't have sex because the wanting or the urge to reproduce does not exist in there bodies.

Dude were chapter 18?

Dead space halo now your talking make more of this quickly this way to cool to put down

please don't abandon this story because it fanfics rarely get an entire multiverse crossover like this one so please who ever wrote continue it

Hey I noticed that this fanfic hasn't been written for 3 or 4 years I would like it if who ever wrote this crossover would continue it please

Ok you clearly havent done one of these for a while but the Infinity has to show up

ok... this could be a good story. but your writing is just too painful to try and decipher.

This story is epic, please update

May you add battle tech? I just like supper big mechs thats all and I don't know who is the biggest hero in that one but Im thinking MW4 mucks one mite be good and having 117 and the clones go up at 80 to 100 ton mechs well be fun

Could you please continue this . I got hooked and love how you've done this. It's hasn't been updated for 2 years? Please update. :)

the overmind(ZERG) necrons(warhammer 40k) :D