Mars Horizon: Steam price vs key
Mars Horizon costs €7.41 as a key at BuyCheapKeys, versus a regular price of €17.99 on the Steam Store: you save €10.58 (59% less). The key activates on your Steam account and it's exactly the same game (prices from October 3, 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 Mars Horizon now? A steal: buy it now
The key costs €10.58 less than the regular Steam price and is at its lowest recorded price.
Price score: 10/10 · The key is 59% 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 Mars Horizon keys
2 offers, sorted by price
Mars Horizon price history
- Steam regular price€17.99
- BuyCheapKeys key€7.41
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 Mars Horizon key
- 1
Buy the key
Choose the Mars Horizon 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.
Mars Horizon FAQ
›How much is Mars Horizon on Steam?
The regular Steam price of Mars Horizon is €17.99. At BuyCheapKeys the Steam key costs €7.41, €10.58 less.
›Where to buy Mars Horizon cheapest?
The cheapest option is the BuyCheapKeys Steam key for €7.41, 59% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the Mars Horizon key the same game as on Steam?
Yes. When you redeem the key, Mars Horizon 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 Mars Horizon at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €7.41 (October 3, 2026). Today it costs €7.41.
›Will the Mars Horizon 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 Mars Horizon 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 Mars Horizon worth it?
It has 84% positive reviews out of 2,759 on Steam (“Very Positive”), was released in 2020 and is developed by Auroch Digital. Genres: Management, Space, Strategy, Education.
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Mars Horizon
€7.41