Buy The Moonstone Equation PC Key

Looking for a cheap The Moonstone Equation key? As of 8 Sep. 2026 the lowest offer is C$10.99 at Steam, picked from 8 offers across 8 stores. Keyshops start at C$11.39, official stores at C$10.99. On PC the keyshop wins on price in most comparisons, but then you are buying a code from a third-party seller, so check the activation region. This game has been cheaper before, on 88% of the days we have data for. A price alert will let you know when the next drop comes. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.

Release: 20 Aug. 2018
Hippy Lizard
Andy Buck
Metacritic:
tbd tbd
Steam:
Mostly Positive (22)
Buy in Official Store:
C$10.99
Buy in Keyshops:
-7%
C$11.39
In keyshops, it was cheaper on 88% of days with data.
See price history

Official Stores (1)

DRM:
Steam
Steam
Steam
The Moonstone Equation
Windows
+1
1y ago
DRM:
Steam
Steam
C$10.99

Keyshops (7)

DRM:
Steam
Steam
Gameseal
The Moonstone Equation (PC) Steam Key - GLOBAL
Windows
+1
5w ago
DRM:
Steam
Gameseal
C$12.34 ~C$11.39
-7%
-17% with SEAL17XDDcopy
-17% with SEAL17XDDcopy
The Moonstone Equation Steam (PC) Key GLOBAL
5.0
Windows
+1
23m ago
DRM:
Steam
Eneba
C$16.01 ~C$12.08
-24%
-10% with XDD10copy
-10% with XDD10copy
G2Play
The Moonstone Equation Steam CD Key
Windows
+1
19h ago
DRM:
Steam
G2Play
C$16.05 ~C$12.12
-24%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Kinguin
The Moonstone Equation Steam CD Key
Windows
+1
19h ago
DRM:
Steam
Kinguin
C$16.05 ~C$12.12
-24%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Driffle
The Moonstone Equation (Global) (PC) - Steam - Digital Key
Windows
+1
23h ago
DRM:
Steam
Driffle
C$13.81 ~C$12.13
-12%
-6% with XDDEALS6copy
-6% with XDDEALS6copy
G2A
The Moonstone Equation Steam Key GLOBAL
Windows
+1
3h ago
DRM:
Steam
G2A
C$16.57 C$15.24
-8%
-8% with G2A8XDDcopy
-8% with G2A8XDDcopy
Difmark
The Moonstone Equation (PC)
Windows
+1
5w ago
DRM:
Steam
Difmark
C$20.00 ~C$17.00
-15%
-15% with XDDEALScopy
-15% with XDDEALScopy

About The Moonstone Equation

The Moonstone Equation - about the game
Scientists chase mysteries in a remote hilltop research facility probing strange inscriptions on buried moon rocks. Guide Alice through this single-player puzzle platformer, living among quirky scientists and theorists while exploring a modern pixel-art world. Freely investigate puzzles and uncover a narrative that shifts with your choices, all without enemies or threats. A persistent living world syncs with your local time-night falls when it does for you-letting colorful characters evolve based on when you return. Hand-crafted puzzles draw from decades of design know-how, filling over 12 hours of relaxed discovery. Puzzle enthusiasts who savor unhurried exploration and clever brainteasers find their match here.

Scientists love a good mystery

The Moonstone Equation is a single player puzzle/platform game about science and curiosity presented in a modern pixel art style. It's set in and around a remote hilltop research facility built specifically to investigate some mysterious inscriptions carved into pieces of moon rock found buried within the hillside. The player guides our protagonist Alice as she arrives at the facility and starts to live and work with the various scientists theorists and oddballs that already call this place home. The Moonstone equation draws its design inspiration from games like Fez, Monument Valley, The Talos Principle and Ico. The Player is free to explore and investigate a world full of puzzles as they like, discovering (and shaping) the narrative as they go. With very little threat and no 'enemies'. It's the perfect game for those inquisitive people who enjoy a good puzzle and the time and space to crack it.
Features

Hand-crafted modern pixel-art
The game is created using bespoke tools running within a custom engine designed to present a crisp high definition pixel-art world using modern rendering technology.

Puzzles, lot of them
You'll find lots of things to solve. Some more obvious than others. Each created using nearly 20 years of game and puzzle making experience

Persistent living world
The Moonstone Equation is a puzzle solving adventure within a world that changes and responds to when (and how often) you choose to play. If it's night where you are, then it's night at the facility. This responsiveness also extends to the colourful characters that populate the game world. Don't worry you don't have to get up at midnight just to solve bits of it, but you might discover something interesting if you do.

Duration: 12+ hours
Interface:
English

Age rating

Unavailable
Metacritic:
tbd tbd
Steam:
Mostly Positive (22)

Minimum:

  • Processor: Intel Core 2 Duo 2.1 ghz or equivalent
  • Memory: 2 GB RAM
  • Graphics: GeForce 440 or equivalent
  • DirectX: Version 11
  • Storage: 300 MB available space

Recommended:

  • Processor: Intel Core 2 Duo 2.1 ghz or equivalent
  • Memory: 2 GB RAM
  • Graphics: GeForce 440 or equivalent
  • DirectX: Version 11
  • Storage: 300 MB available space
Historical low
Price history from official stores
C$10.99
Steam
1 years ago
Price history from keyshops
C$10.38
Gameseal
3 months ago

FAQ

9 questions

Before you start looking for a cheap The Moonstone Equation PC key, check the essentials. Developed by Andy Buck. Published by Hippy Lizard. PC released date: 20 Aug. 2018. Genres: Indie, Adventure. Categories: Family Sharing, Steam Trading Cards, Single-player, Steam Achievements, Steam Cloud, Partial Controller Support, Steam Leaderboards.

Q

Where to buy a cheap The Moonstone Equation Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a The Moonstone Equation key for as low as C$10.99. This deal is available at Steam and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest The Moonstone Equation price on PC. Check the The Moonstone Equation price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the The Moonstone Equation Steam price is C$10.99. You can save an extra ~6% by paying with a discounted Steam gift card.

Our price tracker covers both official retailers and key marketplaces, so you can find The Moonstone Equation on sale even outside seasonal promotions. We currently detect 8 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, The Moonstone Equation is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

The current price is high against its own history: it was cheaper on 88% of days with data. The price reached its historical low on only 1 day out of 177 days with data. The cheapest offer came most often from Gameseal: 69 of 177 days with data. We have recorded offers from 9 stores in total, and from 2 in the most recent reading.

Yes. The Moonstone Equation has an official page on the Steam Store. You can also buy a The Moonstone Equation Steam key from third-party sellers. Our price comparison currently includes 8 offers with Steam DRM. Pick one to ensure your The Moonstone Equation download happens on Valve's platform.

Yes. The Moonstone Equation is Steam Deck Verified - it launches out-of-the-box, displays correct controller glyphs and runs stable. The Moonstone Equation works perfectly on Steam Deck.

According to our data The Moonstone Equation is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best The Moonstone Equation deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for The Moonstone Equation

1 Steam Steam Official
C$10.99
2 Gameseal Gameseal Keyshop
-7% C$11.39
3 Eneba Eneba Keyshop
-24% C$12.08
4 G2Play G2Play Keyshop
-24% C$12.12
5 Kinguin Kinguin Keyshop
-24% C$12.12

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