Games like Back to 1998

If you finished Back to 1998, the closest matches are Irony Curtain: From Matryoshka with Love, Tiny Thief, The Inner World: The Last Wind Monk, Return of the Tentacle and The Secret Monster Society: Chapter 1 - Monsters, Fires and Forbidden Forests. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.