You awaken without memories, disoriented and alone, until a mysterious voice over a speaker offers you a way out. Hunted by unstable pursuers, your only chance at survival is to follow its cryptic guidance.
Along the way, you’ll piece together fragments of a past scarred by trauma, confront truths better left forgotten, and discover why the path forward leads to one unavoidable destination: your birthday.
Bittersweet Birthday is a story-driven action adventure where every battle is a boss fight, each one a unique, challenging test that blends “Souls-like precision” with bullet hell chaos. Survival means mastering enemy patterns, timing your dodges, and striking with precision in battles that demand both patience and nerve.
Outside combat, you’ll explore a bustling town, uncover secrets, complete side quests, and collect dispersed memories that can alter the level of challenge as you see fit. Packed with an eccentric cast of characters, nostalgic pixel art, quirky mini-games, and even collectible gachapon, Bittersweet Birthday offers a blend of punishing challenge and heartfelt charm unlike anything else.
Features
A story of mystery driven by endearing characters!
A lively village with friendly residents and interlocking quests ready to explore!
Punishing combat where reading the enemy is the key to victory!
A darts mini-game! Well, darts are being used, at least...
A Gachapon machine with 48 collectibles up for grabs!
Hand drawn pixel-art with beautifully designed backgrounds!
Fully re-mappable input and support for PlayStation, Xbox, and PC controllers!
Dog!
Copyright @ World Eater Games 2025, all rights reserved.
Graphics: Graphics card with full Vulkan 1.0 support
Storage: 2 GB available space
windows Recommended
OS: Windows 10
Processor: 2.0 GHz
Memory: 4 GB RAM
Graphics: Graphics card with full Vulkan 1.0 support
Storage: 2 GB available space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-05-05
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We’ve prepared yet another exclusive promotional event that gives you the opportunity to earn 50 YXP, helping you progress faster and improve your chances of unlocking higher loyalty levels. All you have to do is make an order of at least 10€ between 08.05.2026 11:00 CET and 11.05.2026 15:00 CET, and you will get extra 50 YXP for our Loyalty Program...
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This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
All functionality is accessible when using the default controller configuration
This game shows Steam Deck controller icons
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck