Workshop at: https://sosp22.com/pygame
Cat art (public domain) from: https://publicdomainvectors.org/en/free-clipart/Japanese-Dou-Shou-Qi-cat-vector-image/22114.html
Germ art (public domain) from: https://publicdomainvectors.org/en/free-clipart/Cartoon-image-of-a-germ/49792.html