Game artwork from the official Steam store; rights belong to the respective publisher.
Base game (Steam) · PC
DE · EUR · Steam
Price observed in the DE store. A Steam account is required. Check the store for package contents, operating-system support and regional purchase restrictions.
Take a seat across from the cheats of a nighttime gambling den. Cheat Koi-Koi is a single-player roguelite about reading your opponent, choosing your tricks, and winning at hanafuda. Work your way to the den's owner, Ririka, and beat her for the prize. Take the points, or call koi-koi
Koi-koi is a Japanese card game played with hanafuda. Match cards from the same month to collect scoring combinations called yaku. Take your points now, or call koi-koi and play on for a stronger hand. If your opponent makes a yaku first, you get nothing from that round. How much are you willing to risk for one more card?
Watch for your chance to cheat
Peek at a hidden card. Swap a card in your hand. Watch your opponent's hands and eyes, then choose when to make your move. Get caught and you pay a fine and lose access to that trick for a while. Your opponents cheat too. Keep an eye on the cards—and the face across the table.
Choose your opponent. Set your stakes.
Pick who to face next…
Official store excerpt · Description source ↗
Read the store description ↗
Base game
No other base game is required.
Activation: Steam
A Steam account is required.
Supported platforms: Windows
Official DE Steam product record; other regions are checked separately.
Checked:
Supports: Steam appdetails type=game identifies this standalone base-game app, Product name and explicitly listed operating systems
DE / EUR · Steam · This exact edition and purchase conditions only.
One recorded observation. Not enough data to show a price trend.
EUR 7.81 lowest in the displayed observations, from Oct 21, 2026, 03:47 AM UTC to Oct 21, 2026, 03:47 AM UTC.
| Observed at (UTC) | Price |
|---|---|
| Oct 21, 2026, 03:47 AM UTC | EUR 7.81 |