Not sure if anyone has posted this yet but 건버드 has been ported to iOS and Android. (From Dreamcast)
You do need a kakao account if you don't have one already.
건버드:오락실제왕의 귀환 for kakao (iOS & Android)
Trailer: https://www.youtube.com/watch?v=qcc8ytiXIu4
iOS: https://itunes.apple.com/us/app/geonbeo ... 38340?mt=8
Play: https://play.google.com/store/apps/deta ... nm.gunbird