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Dario Casali is a level designer at Valve.
Dario started designing levels for Doom while he was studying economics at the University of Oxford in England. After building Final Doom: The Plutonia Experiment with his brother, he was invited to Valve where he discovered that it was actually possible to have a career in games. Upon graduating from Oxford in 1996, he decided that the finance world would just have to wait. After all these years in the U.S., Dario still stubbornly refuses to give up his accent, and happily endures being the subject of British jokes on a daily basis.