WelcomeScreen let you create a welcome screen where you can share information about your server, world or modpack.
It will open up on the players first join of the world. A screen can be build via a datapack (and resourcepack if resources are needed).
Check out the github readme for information.
This mod is developed for Fabric.
There are no plans to develop a Forge version.
Modpack Permission:
Feel free to use it in any modpacks.
Bug Report:
Just report bugs at the github page.