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Greentube Slot Machines

Professor Johann F. Graf, the mastermind behind the development of this gambling software, founded Greentube back in 1980. What began as the generator of small-scale video Greentube slot machines is now the operator of over 230,000 online games spread over fifty different countries and export gaming tools to more than seventy-five countries. They specialise in more than 1,500 associations for casino games, maintaining superior quality and advanced technology when it comes to creating slot games as well as interesting slot titles.
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