Mario's Early Years! CD-ROM Collection
From the Super Mario Wiki
Mario's Early Years! CD-ROM Collection is a compilation disc consisting of the MS-DOS versions of Mario's Early Years! Fun with Letters, Mario's Early Years! Preschool Fun and Mario's Early Years! Fun with Numbers. These three educational games were developed by The Software Toolworks (Mindscape). This disc also appeared on a compilation set titled Mud Pies, alongside Shelley Duvall's It's A Bird's Life and CardShop Plus!. The cover features Mario wearing green overalls instead of his usual red. There are no changes to the original titles barring a selection screen.