Finding Starlight Portal Ruins and Entering the Starlight Dimension

guide

To access the Starlight Dimension and begin your adventure, you must first locate a Starlight Portal Ruin in the Overworld. These ruins serve as gateways to a mystical realm bathed in starlight, a dimension filled with wonder, danger, and discovery.

Locating Starlight Portal Ruins

There are several types of Starlight Portal Ruins, each generating in specific environments. Regardless of the type, the placement rules are consistent: each ruin type attempts to generate once per 36x36 chunk region, ensuring that different ruins are at least 30 chunks apart from one another.

The various Starlight Portal Ruin types include:

Common Portal Ruins — the fallback variant, placed across the widest spread of biomes.
Cold Portal Ruins — the snowy and frozen version.
Desert Portal Ruins — dry, sandy biomes.
Forest Portal Ruins — ordinary woodland.
Jungle Portal Ruins — jungle biomes.

The variants are cosmetic as far as the portal goes: whichever one you find opens onto the same dimension. What matters is the spacing, and because each type is placed on its own 36-chunk grid, a biome that supports two types is the fastest place to search.

Once you find a Starlight Portal Ruin, you will need to face The Gatekeeper. Overcoming this encounter will unlock the gateway, allowing you to travel to the Starlight Dimension. This new dimension features diverse biomes, rare ingredients, unique mobs, and a variety of tools and weapons to discover.

Beating The Gatekeeper is the real gate

Finding a ruin is the easy half. The portal only opens once The Gatekeeper is dead, and that fight pays out twice over: on your first victory it drops both the Orb of Prophecy and the Glimmering Tablet, and neither appears again on a repeat kill.

The pairing is deliberate. The orb is the key that opens the portal frame and the focus you cast spells through; the tablet is the mod's guide book, whose chapters unlock as you progress and which lists the locator items that make a Seeking Eye point at one specific structure instead of the nearest one. Going in without having read it is how people spend an hour looking for a boss lair.

What to take through

The dimension has no shops and no vanilla villages. Bring the tools to mine four unfamiliar stones — grimstone, voidstone, eternal ice and haze ice — because that is where Saltpeter Powder and Starcore come from, and almost every recipe on the far side wants one of them. Food is worth carrying too: the local crop, Nocturnal Millet, grows from seeds hidden inside thioquartz on the banks of the Ether River, so you will not be farming on the first day.