Moon Castle: Steam price vs key
Moon Castle costs €1.79 as a key at BuyCheapKeys, versus a regular price of €4.99 on the Steam Store: you save €3.20 (64% less). The key activates on your Steam account and it's exactly the same game (prices from October 4, 2026).
- Instant deliveryKey by email and in your account
- Full guaranteeReplacement or refund
- Secure paymentCard, PayPal, Google Pay, Apple Pay
- Activates on SteamSame game in your library
- Up to 4% cashbackWith the VIP Club
Should I buy Moon Castle now? A steal: buy it now
The key costs €3.20 less than the regular Steam price and is at its lowest recorded price.
Price score: 10/10 · The key is 64% below the regular Steam price.
The same game, for less
A Steam key gives you exactly the same as buying on Steam. Only the price changes.
Available Moon Castle keys
1 offer, sorted by price
- €1.79Buy
Moon Castle
CheapestSteam keyGlobal-€3.20 compared with Steam
Moon Castle price history
- Steam€4.99
- BuyCheapKeys key€1.79
We've been tracking this game since October 3, 2026. The chart will appear once there are a few days of data.
How to activate the Moon Castle key
- 1
Buy the key
Choose the Moon Castle offer and pay. You get the key instantly.
- 2
Open Steam
Go to “Games” › “Activate a Product on Steam”.
- 3
Redeem and play
Paste the key and the game stays in your library forever.
Moon Castle FAQ
›How much is Moon Castle on Steam?
The regular Steam price of Moon Castle is €4.99. At BuyCheapKeys the Steam key costs €1.79, €3.20 less.
›Where to buy Moon Castle cheapest?
The cheapest option is the BuyCheapKeys Steam key for €1.79, 64% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the Moon Castle key the same game as on Steam?
Yes. When you redeem the key, Moon Castle is added to your Steam account with achievements, cloud saves and updates, just as if you bought it on Steam.
›What is the lowest price for Moon Castle at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €1.79 (October 4, 2026). Today it costs €1.79.
›Will the Moon Castle key work in my country?
We list Global and Europe region keys. Each BuyCheapKeys product page tells you whether it can be activated in your country before you buy.
›Is it safe to buy from BuyCheapKeys?
Yes. Delivery is instant by email and in your account, we accept card, PayPal, Google Pay and Apple Pay, and every purchase is covered by a replacement or refund guarantee.
›Does Moon Castle work on Steam Deck?
Valve rates it “Playable” on Steam Deck. Once the key is activated on Steam you can play it on Steam Deck just like on PC.
›Is Moon Castle worth it?
It has 61% positive reviews out of 18 on Steam (“Mixed”), was released in 2018 and is developed by Pim Nijdam. Genres: Adventure, Puzzle, Mystery, Escape Room.
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Moon Castle
€1.79