Buy Bittersweet Birthday Steam Key

PC
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Earn up to 1,600 tickets when you buy Use them in giveaways and auctions+ level bonus

A Bittersweet Birthday Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €6.59 (no fees, -62%) at Cdkeys Com, 62% below the €17.49 (no fees) Steam price · 12 verified stores, 12 offers in stock · Updated 03h 36min ago.

Top 3 stores

Verified stores

Final prices with fees

See 12 keys from €6.59
Historical prices
Medium price
Current minimum price
Bittersweet Birth… prices: 12-month price history →
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Final prices with fees

Promoted store
Difmark Digital Keys 4.1 (14.2k)
Coupon
Gocdkeys -16% copy Copied!
€11.80 €9.91 -41%Save €8 vs Steam
Store Difmark Digital Keys
Global Icon
Region Global
Steam Key
PromotediFeatured placement paid by the storeCheapest deal Best rated Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.45
Instant Gaming 4.7 (843.1k)
No code available
€9.89 -43%Save €8 vs Steam
Store Instant Gaming
Global Icon
Region Global
Steam Key
Recommended by GoCDKeysiStore recommended by GOCDKEYS for this gameCheapest deal Best rated Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Instant Gaming 4.7 (843.1k)
No code available
€9.89 -43%Save €8 vs Steam
Store Instant Gaming
Global Icon
Region Global
Steam Key
Best ratediThe store with the best user rating among the offers for this game · 4.7/5Cheapest deal Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Cdkeys Com 4.7 (226.4k)
No code available
€6.59 -62%Save €11 vs Steam
Store Cdkeys Com
Global Icon
Region Global
Steam Key
Best ratediThe store with the best user rating among the offers for this game · 4.7/5Cheapest deal Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Kinguin 4.6 (124.5k)
Subscription from 2.99€/month
-15%
Coupon
OCTGOC10 -10% copy Copied!
€6.43 €5.79 -62%Save €11 vs Steam How to get this priceHow to get
Store Kinguin
Global Icon
Region Global
Steam Key
Best ratediThe store with the best user rating among the offers for this game · 4.6/5Cheapest deal Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.81
K4G 4.4 (19.5k)
Coupon
GCDK14DEAL -14% copy Copied!
€9.34 €8.03 -48%Save €9 vs Steam
Store K4G
Global Icon
Region Global
Steam Key
Best ratediThe store with the best user rating among the offers for this game · 4.4/5Cheapest deal Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.08
Cdkeys Com 4.7 (226.4k)
No code available
€6.59
Store Cdkeys Com
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Kinguin 4.6 (124.5k)
Subscription from 2.99€/month
-15%
Coupon
OCTGOC10 -10% copy Copied!
€6.43 €5.79 How to get this priceHow to get
Store Kinguin
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.81
HRKGame 3.9 (30.9k)
Coupon
Gocdkeys12 -12% copy Copied!
€6.69 €5.89
Store HRKGame
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.80
K4G 4.4 (19.5k)
Coupon
GCDK14DEAL -14% copy Copied!
€9.34 €8.03
Store K4G
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€1.08
Instant Gaming 4.7 (843.1k)
No code available
€9.89
Store Instant Gaming
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
G2A 4.0 (352.8k)
No code available
€9.95 How to get this priceHow to get
Store G2A
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.29
Official stores
GamesPlanet 4.3 (629)
No code available
€6.81
Store GamesPlanet
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
GamersGate 3.6 (527)
No code available
€8.74
Store GamersGate
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Fanatical 4.6 (78.7k)
No code available
€13.10
Store Fanatical
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Steam 1.8 (3.7k)
No code available
€17.49
Store Steam
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Humble Bundle 3.7 (2.1k)
No code available
€17.99
Store Humble Bundle
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -

About Bittersweet Birthday

You wake up in a strange facility with no recollection of who you are or how you got there. That is, until a voice calling themselves ‘Ada’ on the other end of an intercom warns you that you’re being hunted, and promises to help you escape.

Bittersweet Birthday is a story-driven action-adventure game where every fight is personal, every victory hard-earned, and every clue a step towards uncovering the truth lying somewhere inside the miasma of mysteries.

Each encounter is a one-on-one showdown with one of your nemeses. Read your enemy, master their rhythm, and adapt to their patterns that blend Souls-like precision with bullet-hell chaos. Punch, kick, block, dodge and parry your way through multiple phases that feel like a final boss each time.

Tweak the challenge to your liking through the Memory system. Memories are gameplay modifiers directly tied to the character’s pasts. They can make fights easier or harder, but never trivial.

Between fights, catch your breath in a vibrant village full of strange and endearing characters. Complete side quests, dig into local mysteries, and enjoy a surprising amount of heartfelt (and often ridiculous) downtime.

  • Try your hand at darts! Or well… I guess darts are partially used, at least.

  •  Rock, paper, scissors – fighting game edition!!

  • Hunt down all 48 Gachapon collectibles, each one of the cool, cute, or creepy kind!

  • Hand-drawn pixel art and detailed backgrounds bring every memory and location to life.

  • Fully remappable controls with support for PlayStation, Xbox, and PC controllers.

A STORY THAT LIVES UP TO ITS NAME

Bittersweet Birthday mixes psychological horror, sci-fi mystery, and dry humor into a story about identity, trauma, and what it means to move forward.

Some truths are hard to remember… others, hard to forget.

How much does Bittersweet Birthday for PC cost right now?

Bittersweet Birthday for PC starts at €6.59 (no fees) at Cdkeys Com, a Steam key, which is 62% under the €17.49 (no fees) it costs on the official store.

With 12 offers across 12 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.

Is it worth buying the Steam Key for Bittersweet Birthday now or waiting?

That €6.59 (no fees) key is at its usual price: no bargain, no spike.

  • Those €6.59 (no fees) are 5% below what it usually costs, measured on the store price.
  • 12 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
  • Not counting today, 169 days out of the 337 days on record were this cheap or cheaper; the lowest it has ever cost is €3.39.
It is not a bad price, but it is not this Steam Key's floor either. If you are in no rush, we will tell you the day it drops.

Worked out from 2,373 daily records of the Steam Key for Bittersweet Birthday across 14 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Can you activate Bittersweet Birthday in US?

All 12 offers are Global, so the code redeems on any account no matter where it was created.


Most common FAQs when buying Bittersweet Birthday for PC in digital format:

It is a key that will allow you to download the game Bittersweet Birthday on your PC from official download platforms.
As of 24/10/2026, in United States, the best price we have found in our selection of online stores that include the key for Bittersweet Birthday on PC is €6.59 (no fees).
The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Bittersweet Birthday to your game library. The account format requires more complicated steps and is more prone to errors during activation.
The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Bittersweet Birthday, and they will provide a new key. You can also contact us, and we’ll help you out.
Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.
At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

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Bittersweet Birthday

Is it worth it?

  • 93%Steam reviewsPositive · 27 reviews
Write a review → See it on Steam →

What the press says

US 1

KeenGamer

60

Find love (or sweet platonic companionship!) in Fujiwara Bittersweet, a free-to-play visual novel with the illustrated vibrancy to match. Join Aya as she navigates her... Read more

About the game

Release date
11 Nov 2025
Genre
Action Psychological Horror Bullet Hell
Setting
Story Rich Combat Mystery
Languages
English Spanish (Latin America) Spanish (Spain)

Requirements

Minimum:
  • Requires a 64-bit processor and operating system
  • Windows 10
  • 2.0 GHz
  • 4 GB RAM
  • Graphics card with full Vulkan 1.0 support
  • 2 GB available space
Recommended:
  • Requires a 64-bit processor and operating system
  • Windows 10
  • 2.0 GHz
  • 4 GB RAM
  • Graphics card with full Vulkan 1.0 support
  • 2 GB available space
Minimum:
  • Requires an Apple processor
  • macOS 10.15 Catalina
  • Apple M1
  • 4 GB RAM
  • Graphics card with full Vulkan 1.0 support
  • 2 GB available space
Recommended:
  • Requires an Apple processor
  • macOS Sequoia 15.6.1
  • Apple M1
  • 4 GB RAM
  • Graphics card with full Vulkan 1.0 support
  • 2 GB available space
Minimum:
  • Ubuntu 22.04-5 LTS
  • 2.0 GHz
  • 4 GB RAM
  • Graphics card with full Vulkan 1.0 support
  • 2 GB available space

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