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Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
First-person tower defense game. Alien monsters occupy the city, and residents have fallen dead or turned to zombies. Scavenge resources: explosives, food, medicine and ammo. Build barricades to slow enemies and protect yourself., Fight wave after wave of monsters and survive until evacuation.
