Brainfuck Challenge — cheap CD keys, compare prices
Is it worth buying?
- Reviews are excellent. (Steam 98%)
- The price is well above its low (was €0.46) — worth waiting for a drop or setting an alert. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
This is a stripped-down programming puzzle built around the obscure Brainfuck language. Players pick up its rules, work through inventive challenges, and can even execute their code through an outside terminal. Falling under the casual and indie genres, it was developed and published by Lyric Law in 2025.
Best price today
€2.99
all-time low: official €2.39 · keyshop €0.46 (+550%)
The cheapest Brainfuck Challenge key right now costs €2.99 at Steam. The lowest price we have recorded for this game: €0.46.
The average low over the past 4 months was €1.12.
Prices as of
Steam best price Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Lowest — official stores
€2.39
Jul 2026
Lowest — keyshops
€0.46
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €2.99 | — |
| Sept 2026 | €2.39 | €0.46 |
| Aug 2026 | €2.99 | €0.46 |
| Jul 2026 | €2.39 | €0.56 |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Steam
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All-time low so far: €0.46
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 or later | Windows 10 or later |
| Processor | 2.0 GHz Dual Core | Intel Core i5 (8th Gen, e.g. i5-8250U) / AMD Ryzen 5 2500U or better |
| Memory | 512 MB RAM | 2 GB RAM |
| Graphics | OpenGL 2.0 compatible graphics | Dedicated GPU (e.g. GTX 750 Ti, Radeon RX 550) or stronger |
| Storage | 200 MB available space | 200 MB available space |
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About this game — FAQ
Can Brainfuck Challenge be played single-player?
Yes, Brainfuck Challenge is a single-player game.
What languages does Brainfuck Challenge support?
Brainfuck Challenge is available in: English, Simplified Chinese.
Does Brainfuck Challenge use Steam Cloud saves?
Yes, Brainfuck Challenge uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a Brainfuck Challenge key?
The cheapest Brainfuck Challenge key is currently sold by Steam for €2.99. The lowest price we have ever recorded for this game: €0.46.
How much does Brainfuck Challenge cost?
Brainfuck Challenge currently costs from €2.99 — the cheapest offer across the stores we track.
Is Steam an official store or a keyshop?
Steam is an official store — keys come directly from the publisher or an authorized distributor.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.