half an hour after posting this I found a project with clone lists which is probably better this is already outdated Maximum Grid Size of 800x250 per chunk or 2400x750 for the entire grid which isn't very big but still pretty good you could just add more chunks maybe but probably not still 1.8 million blocks press space to make random grid I had to delete everything in order to save so maybe noise could work
griffpatch for base engine but I changed a lot Theoretically you could make a max grid size of 1.5 billion blocks if you use 25 separate lists each multiplied by 300 clones and each list has 200,000 items that's around 74 times bigger than a large terraria world