>>8052293It's played using different versions of PES.
Humans representing different boards come up with rosters of memes for those boards.
It's soccer, so 23 memes per board. Then they edit the save data of PES to include that team instead of say Barcelona or Liverpool. Please ignore the fame modifiers.
For the actual matches, it's left as AI vs AI for the gameplay with the only human input being when to take subs or how far up or down the pitch you want the AI to be staging your players.