The Yakyuu Ken Special: Konya wa 12-kaisen

From Sega Retro


YakyuukenSpecial title.png
The Yakyuu Ken Special: Konya wa 12-kaisen
System(s): Sega Saturn
Publisher: Societa Daikanyama
Original system(s): 3DO
Sound driver: SCSP (1 track)
Genre: Miscellaneous

Number of players: 1
Release Date RRP Code
Sega Saturn
¥6,800 T-21901G

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The Yakyuu Ken Special: Konya wa 12-kaisen (THE野球拳スペシャル ~今夜は12回戦~) is a Yakyuken game released to Sega Saturn in 1995


Despite what the name says, it is not a baseball game — it is a rather simplistic pornographic game where the goal is to get some young, dancing women to strip for you by beating them at rock paper scissors.

A chooses rock, B chooses scissors and C chooses paper. Every time you win, the woman takes off a piece of clothing. If you lose 5 times, you will star over. X + Z will make skip the Jankepo videos.


It is originally a 1994 pornographic 3DO game made by Societa Daikanyama called The Yakyuu Ken Special: Konya wa 8-kaisen (THE野球拳スペシャル ~今夜は8回戦~). The same company made a Sega Saturn adaptation in 1995, this version features 4 exclusive women. Both versions were released exclusively in Japan.

It doesn't have a Sega rating; a small warning saying the game is only for adults is placed at the top right corner of the front cover (Sega of Japan's master list gives it an X).


An unofficial port of this version was made for the PlayStation, but with reduced difficulty.

Magazine articles

Main article: The Yakyuu Ken Special: Konya wa 12-kaisen/Magazine articles.

Promotional material

SSM JP 19961122 1996-20.pdf

Print advert in Sega Saturn Magazine (JP) #1996-20: "1996-20 (1996-11-22)" (1996-11-08)
also published in:

SSM JP 19980403 1998-10.pdf

Print advert in Sega Saturn Magazine (JP) #1998-10: "1998-10 (1998-04-03)" (1998-03-20)

Physical scans

Sega Retro Average 
Publication Score Source
70 №346, p33
67 [2]
61 [3]
Sega Saturn
Based on
3 reviews

Saturn, JP
TYS Saturn JP Box Back.jpgTYS Saturn JP Box Front.jpg
TheYakyuuKenSpecial Saturn JP Disc.jpg
The Yakyuuken Special JP.pdf

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Saturn
635,018,832 1995-06-19 CD-ROM (JP) T-21901G V1.001