<3 <3 There will be more levels at release! And we're polishing up the later ones so that they look cool. Neon and Sea have some visual bugs right now while we play with vfx, so that's why they weren't in the demo.
That's a relief to hear about long term saves. The engineers were treating it like an emergency, but I was thinking about it and I can't think of a web game that does this stuff with guaranteed safety. But also I think we can do it better than we're doing it -- like a new build or fix shouldn't reset player data.