I am working on an adventure map. You will spawn on a 400x400 block floating island, and your objective is to get off. The island will be divided into 4 biomes, forest, snow, desert, and jungle. In each biome there will be one block that does not belong (such as sand in a snow biomes). dig under the block that does not belong, and you will have to solve a redstone puzzle, if you do, you get on redstone torch. Once you have collected all 4 torches, you must place them on the shrine of Notch (in the center) and a door will open to the final puzzle, complete the final puzzle, and a way will be provided to get off the island. You will also have to survive on the island, and craft things (for instance, the final puzzle involves destroying obsidian, so you will have to mine and punch trees to make a diamond pickaxe.)