Reworked save systems often focus on "island-specific data" to allow players to switch between multiple rising landmasses.
If you are looking to create a write-up for a game with this theme, here are three distinct ways the "rising island" concept is currently being used in the industry: 1. The Procedural Indie Devlog rising-island-game-link
Games like Rust involve spawning on an island with nothing and building upward to survive raids from other players. Reworked save systems often focus on "island-specific data"