I have made a chunk challenge inspired from Snocrash chunk challenge series that he had this map has 5 chunks and each one has a different biome i have also added a villager shop with some custome trades that i thought will be helpfull if you want you can just don't use them the challenge will be the same but harder also there is no stronghold chunk the portal you will buy it from the shop it's the only item that you actually must buy fro the shop also there are some tresure items and chests hidden in some chunks and maybe in the nether that's all more info in the map and one last thing this map was made in 1.11 and it has some items from it so i recomend play it only in 1.11.