Yachtsman 21 Ko
Yakyuu Kakutou League-Man (Japan) 235 Ko Yam! Yam!? 116 Ko Yamato (US) 31 Ko Yamato (World?) 18 Ko Yankee DO! 8 Ko Yellow Cab (bootleg) 44 Ko Yellow Cab (Japan) 44 Ko Yes/No Sinri Tokimeki Chart 525 Ko Yie Ar Kung-Fu (GX361 conversion) 57 Ko Yie Ar Kung-Fu (set 1) 58 Ko Yie Ar Kung-Fu (set 2) 23 Ko Ying Hua Lian 2.0 (China, Ver. 1.02) 1.25 Mo Yo! Noid (PlayChoice-10) 132 Ko Yokai Douchuuki (Japan new version) 61 Ko Yokai Douchuuki (Japan old version) 61 Ko Yosaku To Donbei (set 1) 6 Ko Yosaku To Donbei (set 2) 5 Ko Youjyuden (Japan) 120 Ko Youma Ninpou Chou (Game Electronics bootleg, set 1) 226 Ko Youma Ninpou Chou (Game Electronics bootleg, set 2) 226 Ko Youma Ninpou Chou (Japan) 55 Ko Youma Ninpou Chou (Japan, alt) 213 Ko Yu-Jan 932 Ko Yu-Ka 1.1 Mo Yukon (version 1.0) 6 Ko Yukon (version 2.0) 200 Ko Yuuyu no Quiz de GO!GO! (Japan) 1.93 Mo