How to make a 3D Start Gui in Roblox Studio [SETUP] in 2 minutes or even shorter, I won't end the series, just publishing the model if you're not interested in the scripting process!
1 - Get the model:
https://www.roblox.com/library/325356...
2 - Open up the game to set up in, and open your toolbox inventory, and select the model "3D Gui package by Codes Otaku".
3 - If you're good with default look and settings, you're ready to go :)
NOTE: DON'T USE THIS TO BIG GAMES, BECAUSE IT'S NOT STABLE YET, THIS IS IT'S FIRST VERSION, AND BETTER SYSTEMS COMING, USE THIS ON YOUR OWN RISK! COULD BE INSTABLE.