San Francisco-based mobile social studio Ruby Seven Studios has secured a $3.5m investment from the interactive divison of Chicago's Rush Street Gaming, operator of four land-based casinos across the US.

Rush Street explained that with social casino revenues expected to reach $2.5bn by 2015, it foresees “immense growth” through the partnership with the studio.

The companies will work together to develop innovative new social casino products, leveraging Ruby Seven’s social and live operations experience with Rush Street’s land-based and online casino expertise.

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