Ubisoft CEO Yves Guillemot announced the $373-million investment this morning at the company's Montreal headquarters, alongside several Parti Québécois cabinet ministers.
Guillemot said the new positions will create an online gaming studio, with most of the jobs to be filled by Quebecers.
Guillemot said Ubisoft considered expanding in other cities, but chose Montreal because of a financial boost from the provincial government.
Marois called Ubisoft a "jewel" in the Quebec economy.
Montreal is one of the largest video game production centres in the world, behind Tokyo and Los Angeles.
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