It's a travesty that "Moddable" isn't one of the top user-defined tags for this game. Pretty much all of my playtime on PC is modded, and I'm only just beginning to be able to comprehend top level maps.

there are hundreds, if not thousands of levels you can play, and dozens of quality of life mods that add things like savestates, TAS tools, more save slots, and plenty of other fun and useful things. And with AverageImposter's mapping tutorials coming out there's never been a better time to start making custom levels.

Here's a link to the Celeste Discord, where much more information can be found. https://discord.gg/celeste (Spoiler warning!)