Pretty fun game! I liked your take on the theme! You're stuck in both a physical loop as well as a game loop lol

Haha another Ouroboros! Great minds think alike ;) I enjoyed this, I like the per-round upgrades, they kept me playing for longer than I intended as I wanted to see how powerful I could get. I also like how subtly the snake closes the loop inwards, I didn't notice until it had almost killed me! Good stuff

Nice and simple!

Good shooter with simple but super effective mechanic! Clever take on the theme and nice use of the Ouroboros concept, integrating it both thematically and in the gampeplay. Controls also worked well.
I did accidentally click on an upgrade I didn't want a few times because I was still clicking away at the last enemies. A slightly longer delay could possibly help.

Great game and great art. I love this style!

Simple but fun with a nice progression in difficulty.

Really like the art style, and fun game :)

Great game! I really like the idea of a shrinking arena. My main critique would be that the primary loop starts off way to slow. Player movement speed, bullet speed, fire rate, etc. all felt super slow. Additionally, the upgrades were not significant enough for me to really care or notice them. They mostly felt like a small percentage improvement? Id rather choose between 2X fire rate or 2X damage, and then be able to change my strategy. Getting 5% improvement for anything is not enough to offer an interesting decision since it will almost certainly not impact the players strategy.
I would suggest polishing the primary loops, just walking and shooting with no upgrades before adding in anything else. Although the snake is cool, I think a game with a better core and no looping-twist would be more fun.
Great work!

Great game! it was a neat idea and well implemented! The gameplay loop gets a bit repetitive after a while, though. I do like the concept of the loop closing in, however!

Couldn't find the part to rate :(. Really liked the game. i think it's good how you can upgrade. The flashing red when hit is also nice. Great work!