Immersive Portals Mod

Experience cool non-Euclidian effects using the Immersive Portals mod. This mod lets you travel seamlessly between dimensions. Lighting a nether portal will immediately show you the nether instead of the purple portal blocks. This makes way for some cool effects that messes with your brain. You can even create rooms that look really tiny from the outside, but when you open the door to enter them, the room actually spans hundreds of blocks in dimensions. There are plenty more stuff that you can try out for yourself.

Download links are given below.