The 85-minute theatrical version screened at international film festivals since November 2009 and will be released in theaters across Canada in June 2010.
A seven-minute version of this video will screen before the film My Week With Marilyn starting November 23rd.
The 50 minute version of the film screened at The Landlocked Film Festival in Petrick's home town.
As an official part of the London 2012 Festival celebrations, a new digitally re-mastered version of the film screened in 150 cinemas throughout the UK.
It is thought that other versions may screen contestants for being amicable to risk-taking behaviour.
The version screened at the November, 1980 premiere ran 3 hours and 39 minutes (219 minutes).
Several different versions of 24 Hours on Craigslist screened in nine different film festivals around the world.
A 15-minute version of the film had previously screened at the South by Southwest Film Festival and 12 other film festivals.
On the test-screening in Guangzhou, Wei said the Chinese version is the 2.5 hours long new international version, not the version screened in Venice Film Festival.
A re-edited version of the film called Hypnotised screened in some country areas.
