Claustrophobia is a miniatures-based dungeon crawl game set within the universe of Hell Dorado.

One player controls a small group of determined humans, while the other plays an almost unending army of demonic creatures. The game is thematic and highly asymmetric: human characters are stronger, but the demon characters are more numerous.

In essence dice are allocated after rolling to perform actions, while cards or special abilities are also available. The game is about managing decisions and choosing what to do with the resources that you have, managing difficult events and out-thinking your opponent. Combat is handled by dice.

Complexity is low, with the focus on theme and building towards a tense, climactic ending.