Mic Up

With a few exploration mods you can travel through many biomes and visit structures from various mods such as Mowzie's mobs, L_Ender's Cataclysm and Structory.

If you're feeling techy, you can build contraptions and different mechanism with the Create mod, but if you want to get into more power-related tech, Mekanism and Draconic Evolution are here for you to play with which will stretch far beyond killing the ender dragon, extending the initial gameplay.

Got a bit of a green thumb? Mystical Agriculture and Botania can help you with that, learning how to utilise plants to create items from their plant essence or harness a flowers potential with magic.

There are also some more dimensions such as: The Aether, a place far above the overworld featuring many floating islands which include many different types of content or The Twilight Forest, where you can meet strange creatures, fight complex bosses and explore many different dungeons.