Games like Rockmen R2: Dr. W*ly no Saiki!!

If you finished Rockmen R2: Dr. W*ly no Saiki!!, the closest matches are Pepper Grinder, Ender Lilies: Quietus of the Knights, Cave Story, Touhou Luna Nights and Mega Man 11. All 8 share its adventure genre and are ranked by how closely their themes and modes overlap.