BlitzPlay is a solution tailored to fit the needs of any online game, developed in the BlitzBasic family of programming languages. It offers easy-to-use functions designed to make it easier to develop any online game. Functions such as BP_HostSession, BP_Message, and the rest come together to offer the ability to do things ranging from creating teams, to sending files, or checking various properties of connections/players. Once purchasing BP-Pro, you get a license which allows you to use in as many projects as you like, as well as granting you free updates for as long as I'm making them! (There have been 4 updates so far..check the version history) You can view the HTML documentation here.