Sanctum Protocol
Good game, but it sits 100% of the way from its all-time low to full price. It drops harder in seasonal sales. Patience pays.
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About this game
What this game is, in the developer's words
After the cataclysm known as The Breach, a young civilian awakens the power of the Guardian to purify demons. Fight alongside the warrior nuns or surrender to forbidden pleasure... every choice will shape your corruption and the fate of the world.
After the cataclysm known as The Breach, portals opened to a dimension of corrupted pleasure, unleashing demonic entities that shattered the spiritual balance of Earth.
Humanity’s last hope lies with the Order of the White Lance — warrior nuns who combine faith, sacred technology, and combat to contain the corruption.
You are a young civilian who, after an encounter with a succubus, awakens the forbidden power of the Guardian: the ability to purify demons through the body.
The nuns believe you might be the key to salvation... but a mysterious figure watches your every move.
💠 Every choice you make will shape your power, your corruption, and the fate of the world.
🌟 Sacred Path – Fight alongside the Order, purify demons, and strengthen your bonds with the warrior nuns, who take their sacred form.
🌑 Corrupt Path – Surrender to forbidden pleasure, drag the nuns into corruption, and follow Lilith’s call, witnessing their corrupt transformation.
Key Features
Adult visual novel with moral, sexual, and spiritual choices leading to multiple endings.
Purification System (NSFW): purify demons through pleasure while your own corruption progresses.
Explore the Sanctuary and the city: each day you must choose your actions — talk to someone, train, or rest? Your limited energy creates opportunities for replayability to explore different outcomes.
Deep relationships with the main nuns: Elysia, Noa, Malina, and Caelia — with romance, betrayal, and mutual corruption routes.
Character transformation: depending on the path you choose, the nuns will change their form and personality between sacred or corrupt versions.
Dream visions gradually reveal the prophecy and the origin of the Protocolum Sanctum.
Dark, provocative anime-style artwork, carefully reviewed and curated for consistency and quality.
Media
Trailers and screenshots straight from the store page
Price intelligence
Accepted price history and the lows that matter
Sanctum Protocol price history and best deals
Sanctum Protocol for PC currently sells from $4.99 at authorized stores. Its all-time low is $4.49, set on 2026-07-07.
Frequently asked questions
Answered from this game's own price and edition data
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