Give everyone a light source, spare fuel and food. Before leaving the entrance, agree on when you’ll turn back and which route you’ll take.
Three things to sort out before going down
A light for each player
Don’t rely on one friend’s light. Bring a spare torch or the materials to craft one. If you have a lantern, check its fuel before going in.
Food and room to carry things
Set aside food for a short trip and leave a few inventory slots free. If you run short on space or food, cut the trip short. You don’t have to collect everything on your first visit.
A plan to get back
Make the entrance your meeting point. If food or light gets low, or someone loses the route, regroup there and head back.
Where should you start underground?
- Check where the entrance is on your map before moving. Start with a short route you can retrace.
- If you find Light Flowers, pick up a few Light Bulbs for lantern fuel. Don’t follow them far down an unfamiliar route.
- Turn around when supplies get low. If someone says, “My light is about to run out,” that’s the time to head back, not after the next room.
What if there’s no cave, or the entrance doesn’t work?
Ask the host whether caves are enabled for that world. Klei’s official guide explains that the surface and caves are separate parts of a hosted world. If nobody can use the same entrance, give the host the world name and any error text so they can check the cave side. Don’t delete or reset the group’s world as a test.
Common questions
Does everyone need to go down together?
For a first trip, it’s easier to stay together. If someone stays on the surface, tell them which entrance you’ll use and roughly when you plan to return.
Do we have to talk inside the game?
No. A separate voice room works for quick calls like “turn back” or “the exit is here.” See our guide to voice rooms and game lobbies if you’re deciding where to meet.