Games like Zak McKracken: A Mansion, a Meteor and the Alien Mindbenders

If you finished Zak McKracken: A Mansion, a Meteor and the Alien Mindbenders, the closest matches are Lacey's Wardrobe, Oblitus Casa, The Fan Game: Back to the Future - Part III: Timeline of Monkey Island, PokeNexus and Pokémon MMO 3D. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.