The Nexus Realm is one of the main dimensions in Shardborne. Here, NPCs take refuge and support the player, providing access to their many facilities. As the player progresses through Shardborne, the Nexus Realm grows: buildings become larger and change shape, more NPCs arrive, and over time, the dimension becomes a thriving town with a variety of cultures and species.

Each player has their own Nexus Realm, which is accessed through the portal they build. Players are able to visit each other's Nexus Realms by entering the portal built by that player. Alliances can be forged to team up with other players in a single Nexus Realm.

There are many dedicated areas inside the Nexus Realm, acting as points of interest that the player will visit regularly.

The dungeon entrance is a section containing one of many unique stations: the Dungeoneering Table. Players can gather near the Dungeoneering Table to group together and enter a dungeon. Parties are created automatically when entering a dungeon together, allowing players to seamlessly adventure together.

Meld, Shardborne's resident blacksmith, finds its home in the forge. Here, the player can create weapons, armor and other equipment they need to fight or explore dungeons with. The forge contains multiple intuitive and immersive stations for the player to discover. One of those stations, the Carving Bench, is used to carve natural materials found within dungeons.

The Alchemist is where the player can brew potions to help them in a variety of ways during dungeons. Potions are one of the few ways to heal inside dungeons.

To remove the hassle of vanilla storage, and without the complexity of many storage and power mods, Shardborne features a built-in storage system, which is intertwined with the rest of the Nexus Realm.