This Mod use to be called My World.
This Mod gives you a new OverWorld Dimensions. So you can have two. Can be used for anything.
1. You need to craft 3 Things... (1. The Orb, 2.The Portal Block and the 3. Lighter.)
2. You need to build the Portal...
From here just use the lighter you crafted to light the portal. You can also get the block and lighter in Creative as well.