Atomic Heart guide: Where to find all Testing Grounds in Polygons - Polygon

Atomic Heart features optional dungeons call Testing Grounds (or Polygons). Here’s where to find them all, plus instructions on how to open them.

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Steam Community :: Guide :: An Epic Guide To Polygons (Testing Grounds) [ENG]

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Steam Community :: Guide :: An Epic Guide To Polygons (Testing Grounds) [ENG]

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Atomic Heart guide: Where to find all Testing Grounds in Polygons - Polygon