Microsoft has patented a new invite system for Xbox Live which could be used for “viral” gaming similar to Facebook applications, but exclusively on the Xbox 360.

As reported by Siliconera the new patent was registered by director of platform development Gary Hall, previously head of casual developer Carbonated .

The concepts are all based around the current party system, with the most basic simply allowing invited friends to invite their own friends, whether they are known to the original party creator or not.

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