Sachen's ports of their NES titles to the Game Boy are mostly iffy. The ones from their multicarts (Magic Maze, Magical Tower, etc.) were lackluster, and their color ports (excluding Thunder Blast Man, since it likely wasn't even done by them,) while not bad, had some issues such as lackluster sound and physics in JB2's case. Street Heroes was probably the best one out of them all as far as porting quality; it lacks voice clips and the difficulty setting doesn't work, but it still looks, plays, and sounds rather close to the original. Too bad they never ported some of their other games like Q-Boy and Locksmith.
As far as official games, Athena for the NES and C64 come to mind, though it's not like the arcade game was anything great to begin with.