For anyone who grew up playing fruit machines or spent time around land-based casino floors, the NOVOMATIC name carries real weight. GreenTube is the company's digital gaming division, responsible for bringing that vast library of titles to online players. Headquartered in Vienna and operating since 1998, GreenTube holds an active licence from the UK Gambling Commission and serves content to operators across more than 45 countries.

No discussion of GreenTube is complete without the Book of Ra franchise. Book of Ra launched as one of NOVOMATIC's most popular land-based slots and made the jump to digital without losing any of its appeal. The original is a 5-reel, 9-payline game with high volatility and an expanding-symbol mechanic during free spins that can cover entire reels. Book of Ra Deluxe bumps the paylines to 10 and adds smoother visuals, while Book of Ra Magic pushes the concept further with up to 9 expanding symbols in the bonus round and an RTP of 95.03%. Each version keeps the Egyptian exploration theme intact while adding incremental mechanical depth. RTP is theoretical and does not guarantee individual results.
Ultra Hot Deluxe is a 3-reel, 5-payline fruit machine that strips everything back to the basics: cherries, lemons, sevens, and stars. There are no bonus rounds or free spins, just a straightforward high-volatility format that mirrors the experience of a traditional cabinet game. It is a niche title, but for players who prefer simplicity over feature-heavy designs, it fills a gap that many modern studios leave open. You can find more classic and modern slots on the UK online slots page at Spin Genie.
GreenTube operates as a fully owned subsidiary of NOVOMATIC AG, one of the largest gaming technology companies in the world. Founded in 1980 and headquartered in Austria, NOVOMATIC's footprint spans land-based gaming machines, online content, and lottery systems. For GreenTube, this parentage means access to a deep back-catalogue of proven game concepts, robust compliance infrastructure, and the resources of a company with decades of regulatory experience. GreenTube is also ISO 27001 certified and integrates AI-based responsible gaming tools through its Neccton mentor system.
GreenTube's entire portfolio runs on HTML5, so all titles load directly in mobile browsers without needing a separate download. The games are designed to work across smartphones and tablets, with touch-friendly controls and adaptive layouts that adjust to your screen size. Even the older classics like Ultra Hot Deluxe have been rebuilt for digital-first delivery. Discover GreenTube alongside other leading game studios at Spin Genie.