This is the hack version of SMB1 NES. Super Boy Combined is the new NES version (2021) which mixed levels of Super Boy 1 & 2 (Master System and MSX versions) the game clone of Super Mario Bros 1. The graphics and levels are the same platform but there is a different, includes water levels and extra 1 level. Super Boy 1 & 2 (Korean game clone) was made by Zemina and released in 1989.
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