World of Pdtheyoutuber is a custom terrain survival world, that includes loads of different areas that I work in, a main base area, and a few hundred custom biomes worth exploring. The current project is called project loops and arches. This is an ongoing project, and the whole goal is to make a rail system that goes 20,000 blocks long, in each direction. At every stop along the way, there will be a resting station, and other things like an automatic minecart switching station. The stops are created to be as efficient as possible, with a bounce-back system, so the minecarts don't get stuck at one stop. Along with the bounce-back system, there is a built in request system, because there will always be one minecart at each stop, and they rotate stops every 5 minutes.
Another project is the reworld project, where I am trying to make the world look amazing. There was lots of chunk errors while switching to the update aquatic. I had to enable cheats to remove them with a chunkloader program. This world has always been in survival, and always will be.