Game got stripped down significantly as far as I can tell, at least the Itch.io version. I came here looking to download the latest one, and just see the option to download the steam version. 2.1 on my computer has more options than the browser version we were left with.
To those with a dollar to spare, I'd say get it. I'm just kinda sad that I can't get 2.5, though, since it was apparently out for a couple weeks.