: Buying missing common, rare, or Dark Matter pets from the Trading Plaza is often faster than hatching them yourself, especially for older or event-limited pets.
: Players can earn Index Coins by discovering new pets, which can be spent at the Index Shop for valuable upgrades and items. Deconstructing the "Fake Finish" Phenomenon Pet Simulator X - Fake Finish Pet Index
The Pet Index is a foundational mechanic in Pet Simulator X (and its successor, Pet Simulator 99), designed to reward players for collecting various pets, including normal, golden, rainbow, and shiny variants. : Buying missing common, rare, or Dark Matter