Family Mysteries: Poisonous Promises: Steam price vs key
Family Mysteries: Poisonous Promises costs €11.81 as a key at BuyCheapKeys, versus a regular price of €14.79 on the Steam Store: you save €2.98 (20% 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 Family Mysteries: Poisonous Promises now? Great time to buy
The key costs €2.98 less than the regular Steam price and is at its lowest recorded price.
Price score: 3/10 · The key is 20% 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 Family Mysteries: Poisonous Promises keys
1 offer, sorted by price
- €11.81Buy
Family Mysteries: Poisonous Promises
CheapestSteam keyGlobal-€2.98 compared with the Steam regular price
Family Mysteries: Poisonous Promises price history
- Steam regular price€14.79
- BuyCheapKeys key€11.81
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 Family Mysteries: Poisonous Promises key
- 1
Buy the key
Choose the Family Mysteries: Poisonous Promises 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.
Family Mysteries: Poisonous Promises FAQ
›How much is Family Mysteries: Poisonous Promises on Steam?
The regular Steam price of Family Mysteries: Poisonous Promises is €14.79. At BuyCheapKeys the Steam key costs €11.81, €2.98 less.
›Where to buy Family Mysteries: Poisonous Promises cheapest?
The cheapest option is the BuyCheapKeys Steam key for €11.81, 20% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the Family Mysteries: Poisonous Promises key the same game as on Steam?
Yes. When you redeem the key, Family Mysteries: Poisonous Promises 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 Family Mysteries: Poisonous Promises at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €11.81 (October 4, 2026). Today it costs €11.81.
›Will the Family Mysteries: Poisonous Promises 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 Family Mysteries: Poisonous Promises 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 Family Mysteries: Poisonous Promises worth it?
It has 80% positive reviews out of 185 on Steam (“Very Positive”), was released in 2020 and is developed by Brave Giant LTD. Genres: Adventure, Casual, Hidden Object, Detective.
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Family Mysteries: Poisonous Promises
€11.81