Rainbow Billy: The Curse of the Leviathan: Steam price vs key
Rainbow Billy: The Curse of the Leviathan costs €1.86 as a key at BuyCheapKeys, versus a regular price of €17.99 on the Steam Store: you save €16.13 (90% 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 Rainbow Billy: The Curse of the Leviathan now? A steal: buy it now
The key costs €16.13 less than the regular Steam price and is at its lowest recorded price.
Price score: 10/10 · The key is 90% 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 Rainbow Billy: The Curse of the Leviathan keys
1 offer, sorted by price
- €1.86Buy
Rainbow Billy: The Curse of the Leviathan
CheapestSteam keyGlobal-€16.13 compared with the Steam regular price
Rainbow Billy: The Curse of the Leviathan price history
- Steam regular price€17.99
- BuyCheapKeys key€1.86
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 Rainbow Billy: The Curse of the Leviathan key
- 1
Buy the key
Choose the Rainbow Billy: The Curse of the Leviathan 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.
Rainbow Billy: The Curse of the Leviathan FAQ
›How much is Rainbow Billy: The Curse of the Leviathan on Steam?
The regular Steam price of Rainbow Billy: The Curse of the Leviathan is €17.99. At BuyCheapKeys the Steam key costs €1.86, €16.13 less.
›Where to buy Rainbow Billy: The Curse of the Leviathan cheapest?
The cheapest option is the BuyCheapKeys Steam key for €1.86, 90% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the Rainbow Billy: The Curse of the Leviathan key the same game as on Steam?
Yes. When you redeem the key, Rainbow Billy: The Curse of the Leviathan 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 Rainbow Billy: The Curse of the Leviathan at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €1.86 (October 3, 2026). Today it costs €1.86.
›Will the Rainbow Billy: The Curse of the Leviathan 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 Rainbow Billy: The Curse of the Leviathan work on Steam Deck?
Valve rates it “Verified” on Steam Deck. Once the key is activated on Steam you can play it on Steam Deck just like on PC.
›Is Rainbow Billy: The Curse of the Leviathan worth it?
It has 91% positive reviews out of 147 on Steam (“Very Positive”), was released in 2021 and is developed by ManaVoid Entertainment. Genres: Emotional, Creature Collector, Indie, RPG.
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Rainbow Billy: The Curse of the Leviathan
€1.86