Agony is a first-person survival horror game set in a nightmarish vision of Hell, where the player controls a lost soul trying to find a way out. The oppressive, grotesque environments are filled with demons and other hostile entities that must be avoided or outmaneuvered rather than fought head-on.

Players explore twisted, ever-shifting landscapes while managing stealth and survival against overwhelming threats, occasionally gaining the ability to possess other beings to progress. Its unsettling atmosphere and dark subject matter mark it as a horror experience for players seeking disturbing, atmospheric dread.