Basically Dragon Quest meets Minecraft which means you build and explore with a purpose. The world has been destroyed by darkness and you as the hero/heroine is the only one that can remember how to build things. Silly plot eh?
Each land represents a level and your objective is to build up the town and then eventually defeat the boss before moving on. You have to start over with each new land but you get to keep the old objects you’ve discovered and the scenarios are different so it gives some variation.