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You are Snitcher who has broken into a mansion in search of a invaluable thing. Your guide on this journey will be Keykeeper, who has lost all the keys to the rooms in the mansion. Help her find the keys, and in return she will help you find what you are looking for.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Try this game before buying.
In Submansion, you will travel through ten rooms in search of lost keys and an invaluable thing. Your guide will be the Keykeeper. At first glance, a helpless lady who could not even cope with her main task - to keep the keys.
Complete the challenges in each room to find all the keys and learn more about Keykeeper, the mansion, its inhabitants, and yourself. Each room is a piece of the puzzle that comes together at the end of the story.
Game features:
- Visual novel with choices
- Multiple endings
- Point & click elements
Right now the cheapest offer for Submansion is CA$6.50 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Submansion is CA$3.90 (recorded on Jul 9, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Submansion drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
