Really nice concept, would suggest making the spacbar not a toggle button, but instead you hold down spacebar to connect to the dots, it will feel much more better in my opinion, also, I think maybe add some slight(can be slow and smooth) movement to the camera, following the character, just to add a little bit more of sth to it, it feels too confined with that space feel background and theme, and add a JRPG menu selection sound effect(like that breaking glass or dispersing sound effect) when a dot disperse(edited)