Already back in October we have mentioned eruiz00’s game Silver Valley. Just end of 2017 the first public version has seen daylight. There is also a long discussion thread available, which you might want to read or maybe you just want to leave feedback as well.
It’s a mix of Castlevania, Kid Icarus and Wonderboy in Monsterland featuring over 60 levels including boss fights. The game can be difficult at times, just as you would expect from an authentic game. If there would be something like the Master System homebrew game of the year 2017, this production would have possibly got the title.