Where and When to See the Fireflies

The fireflies are ambient particles. They only show up in certain places and at certain times, so you won't spot them just anywhere.

Go to the right biome at the right time

1. Find a Swamp or Mangrove Swamp. These are the only biomes where the pack spawns fireflies. Press F3 and check the biome line on the debug screen to confirm where you're standing.

2.** The fireflies are meant to be seen in the dark.

3. Head toward trees and water. The lights float around swamp trees and ponds, so walk through the muddy shallows and between the trunks.

4. Get away from bright light. Torches, lanterns and a full moon all make the small glowing particles harder to pick out.

If you still don't see them

• Open Options → Video Settings and check Particles. On a reduced setting, ambient effects may not show. Set it to All to be sure.
• Run /datapack list and make sure the pack is enabled.
• Make sure you're actually inside the biome and not on its edge.

Getting a good view

A small wooden hut or house built in a swamp makes a great spot to watch them. The fireflies drift around buildings, sugar cane and trees after dark. Turn off the HUD with F1 for a clean screenshot.