They are billions custom map

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The forest patches and small lakes reduces the number of walls needed to sufficiently defend the colony, making defence against waves early on much easier to deal with.

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Though the terrain impedes expansion, it is much easier to build defensive structures for the colony.

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Not a lot of free space, many small water patches. The basic map, which is unlocked right from the beginning. Only the final waves spawns all special infected that are in the game, otherwise waves only spawn normal, fast and chubby infected. The ground is made of either snow, sand or grass, which influence certain game aspects.

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There are four unique map themes, each having their own weighted odds on world layout and resource values.Įach type is built out of patches made of wood, stone and water acting as natural barriers.