Solid controls, good music, and fun game. I may have missed something but I wasn't sure what the bar up on the top right was for. :) Very nice game!
It shows current difficulty of the game. The difficulty impacts enemies health and damage, and the variety of enemies (total 5 types of enemies), that could appear in Loop, and the amounts of them
Thank you for the feedback though!
Oh! Cool. That makes sense. Thanks! :) Fun game!