Facebook currently represents only about a third of worldwide traffic for social networks, according to a recent white paper released by social games and apps platform Viximo and Superdata Research. The non-Facebook category of social gaming will represent the bulk of worldwide revenue generated in the social gaming market, the study states.

Further, the study found that non-Facebook platforms in Western markets will be responsible for nearly one-quarter of worldwide social gaming revenue within the next three years and that the majority of social gaming revenue is made on other platforms, beyond the borders of North America, where Facebook is the clear market leader.

These recent findings as well as strongly increasing user acquisition costs on Facebook are reason enough for us to examine international social networks that might offer opportunities to social game developers. In the second part of our weekly series we present the key facts on the biggest Spanish social network Tuenti.

•  Name: Tuenti

•  Country: Spain

•  Founded in: 2006

•  Owned by: Telefonica

•  Specifics: Social networking, Games (casual and social), Premium video content

•  Employees: 200-500

•  Offices in: Madrid and Barcelona, Spain

•  Membership: Invite only

•  Languages available: Spanish, Catalan, Basque, Galician, English

•  Age restrictions: 13+

•  Audience: 12 million

•  Audience demographics: Students/young people

•  How many games live: 20 social games, 60 casual games

•  Own virtual currency: Tuenti Créditos

• Top5 Games: Backyard Monsters (Viximo/Kixeye), Fitness City(Pyro Studios/iZ), Texas a lo Grande (Metrogames/Viximo), Parchis(Playspace), Millionaire City(Plinga/Viximo) -based on Tuenti rankings for social games

•  Open/closed for developer: Closed

•  Revenue share for developer: 70%

• Payment systems: Credit/debit cards, Mobile phone, Landline phone, PayPal, Paysafecard, Offers

• Other relevant info: Very little banner advertising (the site aims for a clean, curated experience); video ads have been introduced over time