A simple infinite-worlds adventure...
P.S. The author is terrible at naming things...
Samurai Shodown: Warriors of Fate -> Mario Bros. with major changes -> Knights of the Round: The Quest for the Golden Grail -> Dynasty Warriors 7 -> The Avengers 1 -> Silent Hill -> The King of Fighters '97 -> The King of Fighters 2001 -> Ninja Gaiden -> Monster Hunter: World - Iceborne: The New World's Wind -> Evangelion: The End of Fate -> Campione!: Heretical Gods and the Demon King Who Slays Them -> Metal Max 2R: Elegy of Iron and Blood -> Mario Kart -> Puella Magi Madoka Magica -> BTOOOM! -> Bleach -> The King of Fighters XIII -> Avengers: Infinity War -> Devil May Cry & Bayonetta -> One Piece: The Paramount War