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Steam News6 August 20266d ago

Version 0.34: KoiKoi - Custom

We have added a new game mode, "KoiKoi - Custom," which lets you customize the rules of Koi-Koi.

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What changed

0 fixes1 addition0 changes0 removals
  • Gameplay
addedWe have added a new game mode, "KoiKoi - Custom," which lets you customize the rules of Koi-Koi.

Battle Hanafuda changes

addedWe have added a new game mode, "KoiKoi - Custom," which lets you customize the rules of Koi-Koi.

We have added a new game mode, "KoiKoi - Custom," which lets you customize the rules of Koi-Koi.

Settings

SettingDescription
AISelect your opponent's AI behavior
RoundsSelect the number of rounds
Hand CardsSelect the number of cards in each player's starting hand (6/8/10)
Field CardsSelect the number of cards in the starting field:When Hand Cards is not set to 10: 6/8/10/12When Hand Cards is set to 10: 6/8
Hanami/TsukimiSet the points awarded for the sake yaku (Hanami-zake and Tsukimi-zake) 5pts: Standard rules 3pts: Reduced points 0pt: Disable these yaku
KoiKoi CallsSet how many times Koi-Koi may be called: Once: Once per round (standard rules) Multiple: Any number of times per round
KoiKoi ScoringSet the scoring bonus applied when Koi-Koi is calledStandard: If a player calls Koi-Koi and then loses the round, the opponent's score is doubled (standard rules)Rising Stakes: Each Koi-Koi call increases the score multiplier for both players

Special Combination (Multiple + Rising Stakes)

When KoiKoi Calls is set to "Multiple" and KoiKoi Scoring is set to "Rising Stakes," each Koi-Koi call increases the score multiplier to 2x (first call), 4x (second call), 8x (third call), and up to 16x (fourth call).

If the double-score rule for scores of 7 points or more also applies, the score multiplier can reach a maximum of 32x.

A single yaku can be worth more than 200 points, making for a thrilling match.

The "Multiple + Rising Stakes" combination is generally best suited to shorter matches.

You can also use it in longer matches, but they may take considerably more time to complete.

Source

Steam News / 6 August 2026

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