Demon Protocol — cheap CD keys, compare prices
Is it worth buying?
- The price is at or near its all-time low — a good time to buy.
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
Demon Protocol is a space shooter built in a retro arcade style, sending players through 25 waves of enemies and four tough boss fights, with power-ups along the way to keep the fight going. Difficulty is adjustable, letting players see how far they can get before the demons come out on top. It was made by Pete Potos and published by ThryveLabs in 2026.
Best price today
€1.57
all-time low: official €1.57 near low
The cheapest Demon Protocol key right now costs €1.57 at Steam. The lowest price we have recorded for this game: €1.57.
The average low over the past 4 months was €2.36.
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
€1.57
Sept 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €1.57 | — |
| Sept 2026 | €1.57 | — |
| Aug 2026 | €3.15 | — |
| Jul 2026 | €3.15 | — |
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: €1.57
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 | Windows 10 / 11 |
| Processor | Intel Core i3 or equivalent | Intel Core i5 or equivalent |
| Memory | 4 GB RAM | 8 GB RAM |
| Graphics | DirectX 11 compatible GPU | Dedicated GPU with 1GB VRAM |
| DirectX | Version 11 | Version 11 |
| Storage | 200 MB available space | 200 MB available space |
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About this game — FAQ
Does Demon Protocol have co-op?
Yes, Demon Protocol has a co-op mode.
Does Demon Protocol have multiplayer?
Yes, Demon Protocol has multiplayer.
Can Demon Protocol be played single-player?
Yes, besides multiplayer modes, Demon Protocol can also be played solo (single-player).
Does Demon Protocol support a controller/gamepad?
Yes, Demon Protocol has full controller support.
What languages does Demon Protocol support?
Demon Protocol is available in: English.
FAQ
Where is the cheapest place to buy a Demon Protocol key?
The cheapest Demon Protocol key is currently sold by Steam for €1.57. The lowest price we have ever recorded for this game: €1.57.
How much does Demon Protocol cost?
Demon Protocol currently costs from €1.57 — 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.