What I liked:
- The loop mechanic. It's so simple, yet an interesting controller movement.
- The artwork looks really good. The objects that you need to worry about are clearly visually defined, while the background is simple and doesn't try to draw the player's attention to it.
- Your use of black and white looks...elegant. I really enjoyed your game visually.
Suggestions:
- Personally, I think the removal of the circle adds too much difficulty. As a player, I want to be able to see that guide to help me decide if i should grow the circle or minimize it. The guess work isn't very fun. I think the difficulty scaling should center around the speed the enemies are moving towards you, or how fast you rotate around the circle.
- The music doesn't match the visual experience for me. The first song fits, but I remember the second level's song being such a drastic change in the mood, but visually the mood felt the same.
Overall its a cool game, visually pleasing, and the player mechanic is pretty cool. Congrats on submitted your game!