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SunderBound is a co-op top-down shooter with roguelite progression, set in a crumbling mega-tower. Survive floor by floor with a partner you trust, or an AI companion if you’re climbing solo. Every room’s a test. Every upgrade’s earned. And the only way out is up.

Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology