lets Lets see, we got yellothax Yelothax dimension ( portal opened by raging mage)
kraknaknork Kraknaknork dimension ( the one in rookgard Rookgarad that you get killed by)
the cube? ( i I not really sure but i I guess the space inside the cube is in another plane not sure if is same of another dimension)
jack Jack of the future quest ( jack is suposed supposed to be in another dimension paralel parallel to ours.
i I will think a bit more about it if i I can remmember remember something else i post in comments.