Hills rarity and trees rarity, reduce the occurance of hills/trees as the name suggests. The size only increases the width. Also, the bigger the size, the more trees are able to spawn since there's more room to spawn in. So make sure that when increasing the size, to also increase the tree rarity.
Ignore the ugly looking caves, would've made them so much better nowadays Tags: World generator, pen, customizable, randomizer, random generator, biomes, pen world generator
