I just found:
https://community.endlessos.com/t/bagaimana-memasang-cuphead-di-endless-os/5174/3
https://community.endlessos.com/t/how-to-install-cuphead-in-endless-os/5114
https://community.endlessos.com/t/how-to-install-academy-school-simulator-in-endless-os/5091
https://community.endlessos.com/t/how-to-install-hello-neighbor-in-endless-os/5117
According to https://www.reddit.com/r/linuxmasterrace/comments/78e93j/pirates_are_now_packing_windows_games_with/
pirated content should not be in this forum. Those link above containing link from piratebay.