PETACAT is an interactive, retro-styled psychological horror simulation disguised as an innocent virtual desktop companion app. Drawing inspiration from classic 90s digital pets and tamagotchi interfaces, it challenges you to care for a shifting, unstable feline application. While standard features let you feed, play with, or pet your companion, overstepping its volatile computational boundaries triggers glitch subroutines, territorial hostility, and an escalating collapse of the desktop system core.