Thanks for the feedback, and we’re glad you enjoyed it!
We’re actively developing a new, longer version of the demo, and I think that you’ll find that a lot of those issues have been resolved in this new version. We’ve done a lot of optimization and fixed most cases where players can get stuck. :)
The GDC demo skips over a section where we teach interaction, how objects are color coded, and that you won’t get a prompt every time you interact with something. Hopefully, players won’t get stuck at that door in the full version!
That jump is an interesting design conversation. The team and I have talked a lot about it, and we’ve improved the visibility of it a lot already. I’m thinking that it could still use some environmental cues in the straightaway leading up to it.
As far as the “3D Platformer” classification, I see what you mean. It’s difficult to pin down the exact genre. I wouldn’t call it an “action adventure” game, because players would expect combat. We’re using “3D Platformer” because that’s the best fit we can find, and other games we reference use it - like Journey and ABZU.