Snake Labyrinth

I am working on a project that aims to be played on Android, but for now, as I am still playing with some values to find a good gameplay, I am doing it for the PC because it's faster to test.

The game is very simple, you are a snake and you must visit all empty places of a given area to win the level.

All the maps are generated with an algorithm and each level it's builded with a unique SEED, so in case we reset the game we can generate the same map again.

For now, the difficulty scales as the area to explore get's bigger, but I believe that at some point it will become easier with too much empty space. Anyway this is something I would like to receive feedback. How the dissiculty scales and when It starts to become easier as there is too much empty space on the map.

I would like some feedback about the level generation and how the games feels aswell. 

https://itch.io/embed-upload/1843093?color=333333