Peripeteia is a first-person game mixing shooter, stealth and RPG mechanics, placing it within the elusive and ephemeral "immersive sim" genre, heavily inspired by the greats such as Deus Ex, it expands upon the formula with original ideas and an unexplored alternative history post-soviet setting.

Marie is a free agent employed by a multinational mercenary company, looking for fortune in the Desputed Zone. She is a one-woman army, enhanced with cybernetic implants and granted autonomy by her employer - free to make alliances with any faction and complete her assignments at her own discretion.

She's capable of both great compassion, completing her missions without killing anybody, and great cruelty - leaving no soul behind. Different approaches yield favors from different employers, of course.

But there's more to her identity than just being a merc and half-machine. She spends her time off in solitude, drinking Earl Grey and taking care of her cactus collection.