Fireflies — cheap CD keys, compare prices
Is it worth buying?
- Reviews are mixed. (Steam 36%)
- The price is well above its low (was €0.90) — 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
Fireflies is an adventure horror game from indie studio Phanom Games. It blends a range of puzzles with a story-driven experience set in a tense atmosphere. The title leans on exploration and problem-solving rather than action.
Did you know?
On Steam it has only a 36% positive rating from 88 reviews, placing it in the Mostly Negative category.
Best price today
€1.99
all-time low: official €1.99 · keyshop €0.90 (+121%)
The cheapest Fireflies key right now costs €1.99 at Steam — the best of 3 compared offers. The lowest price we have recorded for this game: €0.90.
The average low over the past 5 months was €1.57.
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.
Fireflies prices by store 3
| Store | Type | Price |
|---|---|---|
| Steam | Official store | €1.99 |
| Kinguin | Marketplace | €3.50 |
| G2A | Marketplace | €6.71 |
Lowest — official stores
€1.99
Jul 2026
Lowest — keyshops
€0.90
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €1.99 | €3.50 |
| Sept 2026 | €1.99 | €3.50 |
| Aug 2026 | €1.99 | €0.90 |
| Jul 2026 | €1.99 | €1.00 |
| Jun 2026 | €1.99 | — |
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, Kinguin, G2A
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All-time low so far: €0.90
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 7/8/8.1/10 | TempleOS |
| Processor | Intel Core i3 | — |
| Memory | 2 GB RAM | — |
| Graphics | Radeon X1000/GF 6 | — |
| DirectX | Version 9.0c | — |
| Storage | 2 GB available space | — |
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About this game — FAQ
Can Fireflies be played single-player?
Yes, Fireflies is a single-player game.
What languages does Fireflies support?
Fireflies is available in: English.
FAQ
Where is the cheapest place to buy a Fireflies key?
The cheapest Fireflies key is currently sold by Steam for €1.99. That is the best of 3 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.90.
How much does Fireflies cost?
Fireflies currently costs from €1.99 — 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.