There are five backgrounds. Each has a bit of lore. There are five. Gnomely Forest: A forest that is home to gnomes that don't like being seen. Dwarven Peaks: The mountains that the dwarves live on. They've created cities and mines. Stormbreaker Castle: A castle that is home to a corrupt king. The castle is on a mountain with constant thunderstorms. The Underworld: This is where the Lord of Doom lives. In fact, the Lord of Doom came and killed the Devil himself. If something is here, it's probably evil. Forge Tower: A tower that is home to blacksmiths and mages. Overlooks a bridge that connects two major cities called Forge Bridge.
I made literally EVERY background. Wave two coming sometime. You can use them, but give credit. If I was to give each background a song, here's my picks. Forest: Super Mario World overworld theme or Blue Skys, White Clouds from Paper Mario. Mountains: New Super Mario Bros. Wii Rock World or Mountians from Tyke and Sons. Castle: Super Mario Galaxy Airship theme Underworld: Melty Molten Galaxy or Underworld Otherworldly from Terraria. Tower: Revolution to the Origin part 1 While the small mushroom in the Forest LOOKS like a Super Mushroom, it is not. It doesn't have eyes and it is lankier.