Hmmm... The jungle world can lead to a crag landscape, eventually reaching to a volcano which you can reach the summit of through caverns in the mountain. The caverns reach a fork in the road. one going up, one going down. Up will bring you to the volcano, down wil lead you to a long forgotten frozen mine entrance. At the end of the mine will be a huge broken elevator, when fixed will take you to a swamp... nah, way too basic.
while passing through the jungle you will eventually find 2 giant stone slabs that bar your way. these slabs have a strange feature, it seems like there is some kind of broken visible contraption/mechanic in the stone.
Once these slabs will reveal themself to be a doorway when entering through you will reach the inside of a digital landscape made up entirely of circuitry, chips, and batteries combined with metal, cogs and machinery. It will be a pseudo steampunk/digital world once you venture further inside you will discover that this world is responsible for the layout and working of the jungle. Which means that if you trigger certain contraptions in the digital world the jungle world layout will change with it.
A desert world, featuring not pyramids but giant stranded rusted boats and the huge skeleton of a kraken (do kraken have a skeleton? well they certainly do now!) holding one of the boats which indicates that once upon a time this desert was some kind of sea that became a desert. while you navigate your way through this level you will eventually stumble upon a time portal which you can pass through. When venturing through you will enter the world in the state it was before it became the desert revealing the giant kraken as a boss. You are in the middle of a giant shipfight that the kraken is about to enter as a third party, jumping from boat to boat to defeat the kraken.
The town stuck in time. A world that features everything a town has to offer. This town seems to be frozen in time and everything that once lived is now frozen in place, while you navigate your way to the clock tower and manage to reactivate time everything will start moving again. creating certain new paths in town. One leading to an abandoned excavation site that noone may enter due dangerous gasses. which seems responsible for the halt in the towns' timeflow.
Stop picking your nose