I got a highscore of 70, took me a bit to understand that it's a snake in non-euclidean flat space, and not a 3D snake (which would have been much harder to control)
Gameplay is pretty good, graphics and audio are really nice but my frames struggled quite a bit especially when moving. Might be some Godot issues with forced FPS, I ran into this as well (in 2D)
Innovation is good, but I don't see the link to the theme.
I highly appreciated the white lines helping directing the snakes, and the dot pattern on the cube sides.