>>102354950First off, undertale is a good game unlike whatever Pirate coded.
Second, it is more or less optimized unlike whatever Pirate coded:
https://youtu.be/jDB49s7Naww?si=b8sA5DrujSa1u_Gc TLDR: Pirate runs 128000 checks PER FRAME for each pixel to simulate lightning that could easily be done by overlaying multiple layers of a picture.