What year did Roblox co-founder Erik Cassel die?

Roblox co-founder Erik Cassel died in 2013. He died from cancer on February 11, 2013, at age 45.

Cassel was one of the two central figures behind Roblox, working with David Baszucki on the platform’s early development. Before Roblox, the pair had worked together at Knowledge Revolution, a company known for educational physics software such as Interactive Physics and Working Model.

The Roblox project began under earlier names, including DynaBlocks, before becoming Roblox. Cassel contributed to the platform’s engineering and helped shape its physics-driven, user-created world. His death came after a three-year battle with cancer and was publicly mourned by Roblox staff and its community.

A common mix-up is confusing Cassel’s death year with Roblox’s launch year. Roblox was formally released in 2006; Cassel died seven years later, in 2013. His influence continued through the technology and creative philosophy he helped establish at the company.