1994 - 爆投ドッチャーズ バンプス島は大さわぎ3)RVGF - Looks Bombermany, but you throw balls, rather than place bombs.
1994 - Mr.Boomhomepage - Nice DOS clone, eight players over LAN.
1994 - Master Blasterinfo - Every site has a different date for it.
1995 - おとぼけ忍者コロシアム4)RVGF - 'Bombs' release shurikens, which stun. When stunned you have to finish opponant with a chain attack, which can be moved in a path, even around corners.