Seeing as world 2 is arriving soon, we're thinking about completely revamping world 1s levels. Updating them with all the new zombies.

How many mainline levels per world feels right to you? Right now world 1 has 15 mainline with some minigames scattered around via the gates.

I'm thinking 10 to 15 is what I would say, 20 to 25 may be too much. But I'd love to hear everyone elses opinions! Again these are NOT including minigames.