Joel's Bizarre Pokéventure is a fangame created by Freako, as a romhack for Pokémon Crystal. The game is based on the inside jokes and memes made by Joel. The fangame was streamed by Joel shortly after its release in 2017.
The plot of the fangame involves Joel saving all six members of Vinesauce, who got kidnapped and transformed into Pokémon creatures based on their personality.
Videos
Fullsauce
Joel - Joel's Bizarre Pokemon Adventure (Pokemon Hack)
Joel - Joel's Bizarre Pokéventure (Full Stream With Chat)