Bowser Day Cards

A fan-created observance celebrated on August 4th that honors the Super Mario antagonist Bowser. The date (8/4) references World 8-4, the final castle level in the original 1985 Super Mario Bros. where players confront Bowser for the last time. Originating within online Mario fan communities, the day is used to share Bowser-themed artwork, fan fiction, memes, speedruns and playthroughs of Mario games, cosplay, and other creative tributes. It is an informal, community-driven celebration and not an official holiday recognized by Nintendo or governments.