So my first time playing this was a bit frustrating, as I got this really weird glitch where the pen would refuse to lock on to surfaces. This left me drawing surreal patterns in the air. Thought I was playing some sort of avante-garde perspective piece like Superliminal, until I took another look at the gif and went "no. wait. I've broken it."
Rebooting the game fixed it, and I haven't been able to replicate the bug since, so the mystery of all that will haunt me. But moving on.
Fun concept! Took a bit to get used to the drawing controls but once I got the hang of it I could do it consistently. Felt good zipping all over town via the hub dimension and there's real potential there for puzzles or speedrunning. Gravity gets weird and nausea-inducing if you open a portal on the ground though.
In terms of visuals - I'm not sure if this project is going to lean more realistic (like the buildings) or stylistic, but I will say I rather like the gradient effect on the particles and the trees. Placeholder or not there's something charming about it.
Good luck with development! I'd love to see more of this!