MUTATION PHASE: Steam price vs key
MUTATION PHASE costs €3.54 as a key at BuyCheapKeys, versus a regular price of €3.99 on the Steam Store: you save €0.45 (11% 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 MUTATION PHASE now? Cheaper than Steam
The key costs €0.45 less than the regular Steam price and is at its lowest recorded price.
Price score: 2/10 · The key is 11% 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 MUTATION PHASE keys
1 offer, sorted by price
- €3.54Buy
MUTATION PHASE
CheapestSteam keyGlobal-€0.45 compared with the Steam regular price
MUTATION PHASE price history
- Steam regular price€3.99
- BuyCheapKeys key€3.54
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 MUTATION PHASE key
- 1
Buy the key
Choose the MUTATION PHASE 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.
MUTATION PHASE FAQ
›How much is MUTATION PHASE on Steam?
The regular Steam price of MUTATION PHASE is €3.99. At BuyCheapKeys the Steam key costs €3.54, €0.45 less.
›Where to buy MUTATION PHASE cheapest?
The cheapest option is the BuyCheapKeys Steam key for €3.54, 11% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the MUTATION PHASE key the same game as on Steam?
Yes. When you redeem the key, MUTATION PHASE 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 MUTATION PHASE at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €3.54 (October 4, 2026). Today it costs €3.54.
›Will the MUTATION PHASE 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.
›Is MUTATION PHASE worth it?
It has 68% positive reviews out of 19 on Steam (“Mixed”), was released in 2018 and is developed by IGRODELSKY. Genres: Atmospheric, Shooter, Dark, Gore.
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MUTATION PHASE
€3.54