Now for 1.20.1 to! This mod adds the Creative Catalyst, an item that lets you toggle only your own gamemode between Survival and Creative: right-click while in Survival to consume it and switch to Creative (5 second cooldown, message: Reality bends. You ascend.), and right-click while in Creative to return to Survival without consuming the item (same 5 second cooldown, message: Reality settles. You return.); effects apply only to the player using the item, are handled server-side, and do not bypass Hardcore or other world rules. The crafting pattern remains the same but now uses regular golden apples with a Spider Eye in the center instead of a phantom membrane.
How to install
1. Download and install the new CreativeMode Launcher
2. Click to play on the top of the screen.
3. That's it — launches instantly. No complicated setup required.