Dr. Mario And Metroid SP Release
Nintendo have updated Family Computer Nintendo Switch Online to Ver. 2.0.0 adding SP versions of both Dr. Mario and Metroid, along with Adventures of Lolo, Wario no Mori (Wario’s Woods) and Ninja Ryukenden (Ninja Gaiden). Trailers for the original there games at this post.
Dr. Mario Shiruhitozoshiru UFO Chokuzen Version (Dr. Mario: The UFO cover-up) begins just before a rare scene that occurs only after clearing the game on Level 20 at Hi speed. Metroid Kessen! Ridley Version (Metroid: The decisive battle against Ridley) starts at the battle against Ridley where Samus has all her equipemnt, including the Ice Beam upgrade for her weapon. Screenshots added below..
Dr. Mario Shiruhitozoshiru UFO Chokuzen Version
Metroid Kessen! Ridley Version