
Publisher: Porch Goat Studio LLC · Release date: 2026-03-19
The cheapest The Mortimer Paradox key that activates in Australia has a listed price of $21.95 at Steam (Steam, GLOBAL key). Checked .
A third-person sci-fi horror game about exploring your grandfather’s abandoned mansion and its interdimensional portals. Solve puzzles, evade monsters, and uncover why Dr. Voss vanished.
Prices last checked . Each is the price the store lists; marketplaces add a service fee at checkout.
No. Steam sells it for $21.95, the lowest price we track in Australia.
The lowest price we recorded for The Mortimer Paradox in the last 30 days, counting keys for every region, was $21.95. The lowest listed price for a key that activates in Australia is $21.95 today.
Not always. Stores that sell their own keys, such as Steam and GOG, add no service fee, though sales tax is added at checkout in the US and Canada. Marketplaces add a service fee at checkout, and some payment methods add their own, so on a marketplace the total at checkout will be higher than the price listed here.
Official stores sell their own keys. Marketplaces and third-party sellers sell keys from other sellers: check the seller and the key’s region before you buy, and pay through the store’s own checkout.
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