Tekken Bowl Tournament - Platform: Playstation 2

Unlock Tekken Bowl mode
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Beat the game with Xiaoyu chosen as your first character. 
This will unlock her school girl costume. 
Choose Xiaoyu in her schoolgirl outfit by pressing start 
to select her. 
Beat the game with her as the first character in her 
school girl outfit. 
This should unlock Tekken Bowl, which can be selected from 
the regular Tekken Tag menu screen. 
Once you've done this, you're home free. Just go into 
Tekken Bowl, choose your characters, and start bowling. 
You even get to use a fun-filled silver bowling ball to 
smash gold bowling pins shaped like some weird looking guy 
(we think it's Heihachi). Depending on your character, 
you can be left-handed or right-handed, and the power 
of your throws varies between characters.