Very nice game i like the visuals but it feels a bit laggy especially when near the shop.
Thank you for playing! The slowing down near the shop was intentional. It was implemented to give players a bit more time to upgrade the weapon without getting surrounded by the enemies. I guess it can be a bit confusing :D If you have more troubles with the framerate you can try downloading the windows version or using a different browser. We are glad you've liked it :D