Here is a solid review regarding the concept of "Pokémon Messed Up Version" (often associated with experimental or adult-oriented ROM hacks) and the context of the "v20 Hulster" identifier.
: If "xxx v20 hulster top" refers to a specific ROM hack or custom Pokémon game version, it's possible that it's a fan-made creation. Websites like Romhacking.net or GameFAQs often host such projects, where creators share their modifications.
Pokémon did not ruin entertainment because it is evil. It ruined entertainment because it was too effective . It cracked the code on the human reward system, and every other media company has been desperately trying to copy the cypher ever since.
This messed up the industry because it shifted the goal of content from experience to collection . Today, you see this everywhere: