Isseki Hacchou: Kore 1-pon de 8 Shurui! (一石八鳥 これ1本で8種類！, “Eight birds with one stone: 8 types with this one title!”) is a video game for the Nintendo Game Boy Advance, published in 2002 by Konami. It was developed by Konami Studio. The game features Koi-Koi and Hana-Awase, alongside 2 mahjong games and 4 games with Western playing cards.
¶ Gameplay and rules
The game has both single-player and multiplayer modes. CPU opponents have 3 difficulty levels, and hanafuda games have game length options for 4, 8 or 12 rounds.
Notes about the specific Koi-Koi rules used in this game.
General notes:
- The Sake Cup counts only as an Animal card, never as a Chaff card.
- There aren’t any score multiplier rules
- By default, there is a Dealer’s Priviledge rule (oyaken), where the dealer wins 3 points in case of a tie. There is an option to turn it off.
- There are game options for turning off Viewing yaku and Rainy 4 Brights.
- The game uses cumulative scoring (not zero-sum)
Yaku values:
- Boar-Deer-Butterflies (Ino-Shika-Chō) is set at a fixed 5 points, and Poetry/Blue Ribbons (Akatan/Aotan) at 6 points. (Both can combine with regular Animals/Ribbons yaku.)
- High values for Bright yaku are used (6, 8, 10, 15 points for 3 Brights, Rainy 4 Brights, 4 Brights and 5 Brights respectively).
- Flower Viewing (hanami-zake) and Moon Viewing (tsukimi-zake) each score 3 points.
Notes about the specific Hana-Awase rules used in this game.
General notes:
- Chaff cards are worth 0 points, which means the par score is 80 rather than 88.
- There is a Fuke rule option (turned off by default). Instead of negating all scoring, it gives a yaku score of 80 to players whose captured cards add up to 25 points or lower.
Yaku notes:
- There are yaku for Animals, Ribbons and Chaff, similar to Koi-Koi. 5 Animals, 6 Ribbons and 12 Chaff are each worth 20 points, with 20 extra points to each additional card of the same rank.
(Note: this Ribbons yaku replaces the typical 6 Ribbons and 7 Ribbons yaku.)
- Yaku inventory:
- Always included: 5 Brights, 4 Brights, Poetry Ribbons (akatan), Blue Ribbons (aotan), Boar-Deer-Butterflies (ino-shika-chō), Ribbons, Chaff
- Included by default (can be turned off): Rainy 4 Brights, Flower Viewing (hanami-zake), Moon Viewing (tsukimi-zake), Animals
- Optional (turned off by default): Front Sugawara (omote Sugawara), Four-of-a-Kind yaku (“shima”, for Wisteria, Willow and Paulownia), Fuke
- Notably not included: Pine-Paulownia-Baldy (matsu-kiri-bōzu), Grass Ribbons (kusatan)
- Almost all yaku are worth 20 points. The exceptions are 5 Brights at 100 points, 4 Brights at 40 points, Fuke at 80 points, and the Animals/Ribbons/Chaff yaku explained above.