Owlient is best known for its popular horse raising game Howrse, which has more than two million monthly active users.
"We are thrilled to welcome the talented team at Owlient to Ubisoft. Over the last five years they have developed an architecture dedicated to delivering and monetizing games as a service, as well as the skills of attracting and retaining online communities," said Ubisoft chief executive Yves Guillemot.
"This acquisition is the next step in the acceleration of Ubisoft's free-to-play strategy following last year's launch of Settlers Online, CSI Crime City and Heroes Kingdoms, as well as the recent beta launch of our ambitious title Tom Clancy's Ghost Recon Online."
Tom Clancy's Ghost Recon Online is a free-to-play spinoff of the popular tactical shooter announced earlier this year for PC.
A Wii U version of Ghost Recon Online was also revealed at E3 2011, using the Wii U controller screen to display tactical options on the fly.