I've noticed that No-Intro has recently added a bunch of homebrews from SMS Power to their Master System catalogue and I want to shout out Pac-Man Master Museum. It's a compilation of games including Pac-Man, Ms. Pac-Man, Pac-Man Plus and the hypothetical Ms. Pac-Man Plus, featuring arcade-accurate ghost behavior, difficulty settings and optional fast speed mode. A very enjoyable way to play the games on a horizontal screen.