Longest videogame marathon on a platform game

According to Official Guinness Records,

James Vollandt (USA) played the arcade version of platformer Joust for 67 hr 30 min on 5–8 July 1985 at Johnny Zee’s Family Fun Centre in Victoria, British Columbia, Canada.

For a complete list of 1985 records, please visit 1985 Guinness Records in Canada.

Other Canada records that might interest you:

• Most matches consecutively played scoring at least one goal by an NHL ice hockey team
• Victoria Cross - longest lived holder
• Most spins of skateboards under each foot (two-board 360's)
• First perfect 10 awarded in Olympic gymnastics
• First transplantee to give birth