The Binding of Isaac: Afterbirth — cheap CD keys, compare prices
Is it worth buying?
The price is above its low (was €8.24), but within a reasonable range Notify me on a drop
About the game
The Binding of Isaac: Afterbirth is a major expansion to The Binding of Isaac: Rebirth, the 2014 roguelike that was widely praised as one of the best of its genre that year. Players follow Isaac once again, discovering strange items that transform his appearance, grant him superhuman powers and help him battle waves of bizarre creatures. The expansion was made by Nicalis, Inc. and Edmund McMillen, and it launched in 2015.
Did you know?
Edmund McMillen, one of the creators behind this game, is also known as the designer of the hit indie platformer Super Meat Boy.
Best price today
€8.93
· · check “Region” on the seller’s page
GOG · Official store · GOG
Global key · check “Region” on the seller’s page
You pay GOG directly · same price as on their site
Notify me when it drops below €8.04
- On Steam
- €10.99−19 % here
- lowest in tracked period
- €8.242 Oct
- Average low, 5 mo.
- €9.01
The cheapest The Binding of Isaac: Afterbirth key right now costs €8.93 at GOG — the best of 5 compared offers. (Prices as of )
Offers 5
Prices as of
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Offers that are not a key (Gift) — show (1) Gift: the game arrives as a Steam gift and works only in the region it was bought for.
These are not ordinary keys. A gift is usually region-locked and arrives through someone else's account — if the region does not match, the game will not activate. An account means you get someone else's login: the game never becomes yours, and it breaks Steam's rules. A DLC or a bundle is not the base game. That is why none of them count towards the price at the top of the page.
The Binding of Isaac: Afterbirth prices by store 5
| Store | Type | Price |
|---|---|---|
| GOG | Official store | €8.93 |
| K4G | Marketplace | €9.99 |
| Kinguin | Marketplace | €10.88 |
| Steam | Official store | €10.99 |
| G2A | Marketplace | €13.53 |
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Lowest official since we started tracking (Jul 2026)
€8.24
Oct 2026
Lowest — keyshops
€10.88
Oct 2026
Monthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €8.24 | €10.88 |
| Sept 2026 | €8.57 | €10.97 |
| Aug 2026 | €8.54 | — |
| Jul 2026 | €8.71 | — |
| Jun 2026 | €10.99 | — |
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: Kinguin, K4G, Steam, G2A
- GOG key — on GOG.com → Redeem a code (or in GOG Galaxy: Add games & friends → Redeem GOG code). Stores with this activation: GOG
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | 7 | 7 |
| Processor | i3 | i7 |
| Memory | 2 GB RAM | 4 GB RAM |
| Storage | 500 MB available space | 500 MB available space |
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About this game — FAQ
Does The Binding of Isaac: Afterbirth have co-op?
Yes, The Binding of Isaac: Afterbirth has a co-op mode.
Does The Binding of Isaac: Afterbirth have multiplayer?
Yes, The Binding of Isaac: Afterbirth has multiplayer.
Can The Binding of Isaac: Afterbirth be played single-player?
Yes, besides multiplayer modes, The Binding of Isaac: Afterbirth can also be played solo (single-player).
Does The Binding of Isaac: Afterbirth support a controller/gamepad?
Yes, The Binding of Isaac: Afterbirth has full controller support.
What languages does The Binding of Isaac: Afterbirth support?
The Binding of Isaac: Afterbirth is available in: English.
Does The Binding of Isaac: Afterbirth use Steam Cloud saves?
Yes, The Binding of Isaac: Afterbirth uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a The Binding of Isaac: Afterbirth key?
The cheapest The Binding of Isaac: Afterbirth key is currently sold by GOG for €8.93. That is the best of 5 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €8.24.
How much does The Binding of Isaac: Afterbirth cost?
The Binding of Isaac: Afterbirth currently costs from €8.93 — the cheapest offer across the stores we track. For comparison, the game costs €10.99 on Steam, so buying a key saves you about 19%.
Is GOG an official store or a keyshop?
GOG 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.