- Unseen Blade
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- Intrepid Heroic Member
Well, none of those were actually thought out.
Horde consists of 10 waves that repeat 5 times, players have to battle on normal multiplayer maps that don't work well for the mode. Survival was just from campaign, but with more tanks. Zombies has 3 maps was just a last-minute thing in CoD. Firefight has had a lot of time put into it, and it would be in Halo 3, but was canceled due to time constraints.
And please don't say Bungie copied Epic, because Marathon had survival mode, so if anything, everybody else copied Bungie.