Greentube Slots
Greentube: the Novomatic classics, brought online
If you have spent time in a German gaming hall, you already know Greentube's catalogue — even if you know it under other names. Book of Ra Deluxe is the online edition of the slot that made the expanding-symbol free-spins round famous: trigger the free games, watch one randomly chosen symbol spread across a whole reel, and let it pay. Greentube is the digital arm of Austria's Novomatic, and its role is to bring those land-based classics online with the same maths and the same look players first met on physical cabinets.
Why these titles feel familiar
Greentube was founded in 1998 and became part of the Novomatic group around 2010, which is why its online range reads like a greatest-hits list of European arcade slots. The "Deluxe" tag marks the upgraded online versions — cleaner art and sound, sometimes an extra payline or two — but the core stays true to the original. Most keep a small, readable layout and a single defining feature rather than layered modern mechanics, and that plainness is exactly what makes them recognisable.
Greentube slots at Wunderino
Every Greentube slot here is checked for the German regulated market by the Gemeinsame Glücksspielbehörde (GGL):
- Sizzling Hot deluxe — a pure retro fruit machine: cherries, sevens and a star scatter, with the red/black gamble feature and no bonus clutter.
- Lucky Lady's Charm Deluxe 10 — a lucky-charms theme whose Lady symbol doubles base-game wins and adds a triple multiplier across the free spins.
- Dolphin's Pearl Deluxe 10 — an underwater take on the same Deluxe formula, with dolphins as the expanding free-spins symbol.
- Book of Ra Magic — a later Book of Ra variant that can build up to nine different expanding symbols across repeated free-spin retriggers.
The feature that started a genre
The expanding special symbol from the original Book of Ra is one of the most copied ideas in this corner of the slot world — the whole category of "book" slots traces back to it. Alongside it sits the other Greentube signature: the optional red/black gamble after a win, a simple double-or-nothing card guess carried over from the cabinets to the online editions. It is a small, classic toolkit, used consistently rather than reinvented every release.
Where to go from here
For more of the same German-hall heritage, Gamomat builds in a similar classic style and Apparat shares the retro fruit-and-book sensibility. You can line them up on the slots page to find the look you remember.
