Hanafuda Koi-Koi

Hanafuda Koi-Koi is a traditional Japanese card game for two players using Hanafuda cards. Players match cards from their hand with cards on the table to create scoring combinations. The unique 'Koi-Koi' system adds strategy by letting you risk your points to score even higher.

When you complete a scoring combination, you can declare 'Koi-Koi' to continue the round and aim for more points. However, if your opponent scores first, you lose all your points for that round. Choosing 'Stop' secures your current points and moves to the next round.

There are 48 Hanafuda cards total, consisting of 12 months × 4 cards each. Each month features specific flowers or plants representing Japan's seasons, such as Pine (January), Plum (February), and Cherry Blossom (March). The 4 cards per month are categorized as Bright, Animal, Ribbon, and Plain cards.

Major combinations include Five Brights (all 5 bright cards for 10 points), Four Brights (4 brights excluding Rain for 8 points), Three Brights (3 brights excluding Rain for 5 points), Boar-Deer-Butterfly (these 3 animal cards for 5 points), and Poetry Ribbons (3 red or 3 blue ribbons for 5 points each). Many other combinations exist for various scoring opportunities.

Absolutely! Practice mode includes hints that show which cards you can capture and what combinations you can make. The 1-round mode offers quick, casual games. While the rules are simple to learn, the game has deep strategy that provides long-lasting enjoyment.

Bright cards (Hikari-fuda) are the most valuable special cards in Hanafuda. There are 5: Crane with Pine, Curtain with Cherry Blossom, Moon with Pampas Grass, Man with Willow, and Phoenix with Paulownia. Collecting these creates high-scoring combinations like Five Brights, Four Brights, or Three Brights.

Beginners should start with 'Easy' difficulty in 1-round mode. The CPU moves slowly, giving you time to think through your plays. As you improve, try 'Normal' or 'Hard' difficulty and enjoy full 12-round matches.

Moon Viewing is a combination of the Moon card (Pampas Grass) and Sake Cup card (Chrysanthemum) worth 5 points. Cherry Blossom Viewing combines the Curtain card (Cherry) and Sake Cup card for 5 points. These are popular early-game targets since they only require 2 cards.

Plain cards have important uses! Collecting 10 Plain cards creates the 'Plains' combination worth 1 point, plus 1 additional point per extra card. They're also strategically valuable for blocking opponents from completing high-scoring combinations.

CPU strength varies by difficulty. 'Easy' is beginner-friendly and aims for basic combinations. 'Normal' plays at an average player level. 'Hard' is for advanced players - the CPU reads your moves, blocks your combinations, and uses complex strategies. Choose the level that matches your skill.