Greentube is a game developer and provider that creates online casino games. The company was founded in 1998 and is based in Vienna, Austria. Greentube offers a range of games, including slots, table games, video poker, and bingo. Some of their popular games include “Book of Ra”, “Sizzling Hot”, and “Lucky Lady’s Charm”. Greentube also offers a platform solution for online casinos, allowing them to integrate Greentube games and manage player accounts, payments, and other features. The company is part of the Novomatic Group and has a global presence, with offices and operations in multiple countries.