Hello. Good to hear, that there's a SG-1000 port of the game too. Will try out this version on my real Master-System in the next days, by using my Everdrive X7.
I already had a look on this SG-1000 port with the Kega Fusion emulator today. Your MSX port looks a bit better, I would say. But gameplay-wise, this SG version is also not bad. Thanks.
Guzzler is a game, I really like and it's a bit sad, that there is no port of this game for other well-known systems like for example NES, Atari-7800, C-64, Atari-800, Master-System, Mega-Drive, PC-Engine or Super-NES. Nearly all of the old Arcade classic-games have their ports on these systems, but this game was forgotten, it seems.