custom zone

I want to make my own custom special stages, wich arent based on nights into dreams, but i dont know where to start. Does anybody know the basics? Much thanks already!

I am trying to test unlockable maps but when i try to open the map it says that it cannot find "Map00" even though the map slot i took was Map45, i wrote a MainCfg and a unlockable thingymajig for the level wich i will place below. Unlockable 3 Name = Custom map test zone Objective = Get 3...

Hey, so i have half finished my first act for a level pack that im making, but i wanted to test to see if it worked, but when i loaded the mod and started it up, GFZ1 loaded instead of the mod's level. i have added the images of the PK3 file below.

i have the polyobject fully set up, but when it moves it randomly stretches the sides, wich i dont want. how do i make it a platform? like as in GFZ2 on the upper path for sonic. (by the way flag repeat midtexture is not checked, only flag double sided) 1713698039 nevermind, i have found out...

Ey there! Here's a thread for the WIP section. So, I've been testing out on making custom levels and textures, planning on making a whole mod pack with custom characters and music. But I thought it's rather ambitious, so I tried on making one custom level for a while, which going to include 2...