Is they do that, then they will overwork zombies and make it horrible. And there is only so many creative ways to make a map until you end up at Badezimmer der Toten. I'll let you find out what that means in English
English
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It's already been overworked and made terrible haha. I mean now zombies have Exo suits and can basically fly. If they just compiled every zombies map and gun that's already been made it would still be worth it over the actual call of duty game