Nice visuals. I somehow really like the main menu design, the signup and login page are very clean and the colors fit well. I also like that the characters roam around and don't just stand in place. My only critique is that when you die, the game over menu with the buttons is shown immediately and I was still spamming my mouse click, unluckily my mouse was over the quit button. Maybe adding a small delay before the buttons are shown, such that I can realize I died and stop spamming.