Spawn control for beginners

[Chopper]

This may help one or two people out.

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[Superhands]

Great commentary mate, I feel that spawn control is one of the most underrated pieces of knowledge in this game. As you've pointed out, the zombies will only spawn from the room you're in and the 2 rooms next to it (apart from on Moon in certain areas it seems). So, keeping a door closed can give you quick and consistent spawns in many areas.