Hmm I mean for 3D you could aswell use godot or just dive in with unity, both for free.
99$ per year and you can´t even customize your loading screen + you are limited with worlds/scenes (whatever that exactly is, I guess it´s kinda like layouts) 199$ per year if you want a custom loading screen, but you are still limited with worlds/scenes, 299$ if you don´t want limitations.
And people complain that C3 is expensive...