ColossalCon

ColossalCon is a series of annual multi-day anime conventions held at various Kalahari Resorts venues by Nostalgiaconventions.com LLC.

Colossalcon Prime

ColossalCon Prime, formerly called Cleveland Colossal Convention, is an annual multi-day anime convention held during May/June at the Kalahari Resorts and Conventions Sandusky in Sandusky, Ohio.

Programming The convention typically offers an artist's alley, art galleries, concerts, cosplay contests, dances, flea market, formal ball, game room, game shows, guest speakers, karaoke, merchandise vendors, panels, and video rooms.

History ColossalCon was started in 2002 and began as a one-day convention in Strongsville, Ohio. In 2003, it became a three-day convention and moved to the Holiday Inn Cleveland South Independence in Independence, Ohio where it remained until 2007, except for 2005 when it was located in the Embassy Suites. The convention for 2008 moved to the Hilton Cleveland East / Beachwood in Beachwood, Ohio, and moved again in 2009 to the Kalahari Resorts and Conventions Sandusky in Sandusky, Ohio where the convention has been located since. During the 2010 convention a tornado hit the area surrounding the venue, hotel and convention guests were sent to the basement for shelter, and the venue suffered no damage. The convention is considering an attendance cap due outgrowing Sandusky's hotel room capacity. In 2017, the water-park remained open extra hours for the convention. Nostalgiaconventions.com LLC (ColossalCon) filed a complaint against Colossus Con in 2017 for using a name too close to ColossalCon.

ColossalCon 2020 was moved from June to September due to the COVID-19 pandemic, but was later cancelled. The convention had an attendance cap of 7,000 in 2021.