How do I add the fireflies data pack to my world?
Put the pack in your world's datapacks folder, or select it on the data pack screen when creating a new world. Then load the world, or run /reload if it is already open. Run /datapack list to confirm it appears among the enabled packs.
Which biomes do the fireflies show up in?
The pack spawns ambient firefly particles in the Swamp and Mangrove Swamp biomes. Other biomes stay as they are in vanilla.
I installed the pack but I don't see any fireflies, what am I doing wrong?
The fireflies are a nighttime effect, so wait for night or set the time to night. Make sure you are actually standing in a Swamp or Mangrove Swamp. Look around the trees and ponds, where the lights float.
Do the fireflies show up during the day?
The pack is designed for night. The tiny lights float around trees and ponds after dark, so visit swamps at night to see them.
Why did the fireflies stop working after I added another data pack or mod?
This pack only conflicts with packs or mods that directly change the swamp biome files. If you recently added something that reworks swamps or mangrove swamps, disable it and check whether the fireflies come back.
Will this pack lag my game?
No. The pack uses a lightweight setup that runs in the background and keeps world performance smooth. It only adds particles in swamp biomes, so it shouldn't slow down your travels.
Does this change anything in gameplay, like mobs, drops or items?
No. The pack only adds floating particle effects to swamps. Vanilla gameplay stays completely intact, with no new items, blocks or gameplay changes.
Can I use this on a multiplayer server?
Yes. It works on custom servers as well as in singleplayer. Install it in the server world's datapacks folder, and it works like any other data pack, so players shouldn't need to install anything themselves.
Is it compatible with my other data packs?
It works alongside most standard data packs. The only conflicts are with packs or mods that directly alter swamp biome files.
The pack is enabled but I still see nothing in the swamp at night, any other settings to check?
Check your video settings. If Particles is set to a reduced level like Minimal, small ambient particles such as these may be hidden, so try setting it to All.