Novomatic Online Division

Greentube

The interactive gaming division of the Novomatic Group, Greentube is headquartered in Vienna, Austria, and delivers 300+ classic and modern casino games including the legendary Book of Ra and Sizzling Hot Deluxe series to regulated markets worldwide.

Founded 2001, Vienna, Austria (Novomatic Group)

Portfolio 300+ slots, table games, video poker and bingo titles

Technology HTML5, novoSDK, Greentube Plurius server-based gaming

Markets 12+ global offices including Vienna, Malta, UK and North America

Licensing MGA · UKGC · Multiple European Jurisdictions · GLI Certified

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About the Provider

The Classic Casino Powerhouse Since 2001

Greentube is the digital and online gaming division of the Novomatic Group, one of the world's largest gaming technology companies. Headquartered in Vienna, Austria, Greentube brings the iconic land-based Novomatic gaming experience to the online world, delivering the same classic titles that have defined casino floors across Europe for decades. With offices spanning 12 locations from Vienna and Malta to Las Vegas, Nottingham, and Vancouver, Greentube operates a truly global production network.

The portfolio spans 300+ titles including video slots, table games, video poker, and video bingo, anchored by globally recognized franchises such as the Book of Ra series, Sizzling Hot Deluxe, and Lucky Lady's Charm Deluxe. These games carry decades of player loyalty built in land-based environments and transfer that recognition directly to online operator lobbies. Greentube's proprietary novoSDK technology platform and the Greentube Plurius server-based gaming system provide operators with flexible, certified delivery infrastructure.

OHS Gaming operators access the complete Greentube catalogue through a single integration, with full white-label platform support and connectivity across regulated jurisdictions. MGA, UKGC, and multiple European certifications ensure Greentube titles meet the compliance requirements of the iGaming markets your platform serves.

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Core Provider Values

Decades of Player Trust
Iconic titles built on Novomatic's land-based heritage carry player loyalty that new studios cannot replicate.
300+ Title Portfolio
Slots, table games, video poker, and video bingo all under one integration covering diverse player preferences.
Proprietary Technology
novoSDK and Greentube Plurius server-based gaming deliver certified, flexible infrastructure for operators at scale.
Global Compliance Network
MGA, UKGC, and multi-jurisdiction European certifications support broad regulated-market deployment.

Software Capabilities

Key Provider Features

What operators get when they integrate Greentube through the OHS Gaming platform.

300+ Title Catalogue

Over 300 certified games spanning video slots, table games, video poker, and video bingo. The breadth of Greentube's portfolio allows operators to build a complete casino lobby through a single provider relationship. See how comparable catalogue depth is offered by Pragmatic Play in our provider network.

300+ Titles

Iconic Land-Based Heritage

Book of Ra, Sizzling Hot Deluxe, and Lucky Lady's Charm Deluxe are among the most-played slot titles in land-based casino history. Bringing these titles online gives operators an immediate player recognition advantage that drives lobby conversion and session depth in competitive markets. Paired with newer classic slots from Amatic, they anchor the classic slots segment.

Flagship IP

novoSDK Technology Platform

Greentube's proprietary novoSDK delivers a standardized, certified API layer for seamless operator integration. The SDK handles game loading, session management, and regulatory reporting across all title types, reducing operator-side technical overhead and accelerating time to market for new deployments.

novoSDK

Greentube Plurius Server-Based Gaming

Plurius is Greentube's server-based gaming platform, enabling centralized game management, remote configuration, and multi-site deployment. Operators can manage RTP settings, bonus configurations, and jackpot parameters across the entire game fleet from a single back-office interface without requiring individual game updates.

Server-Based

Multi-Jurisdiction Licensing

Greentube holds certifications from the Malta Gaming Authority (MGA), UK Gambling Commission (UKGC), and multiple additional European regulatory bodies. GLI certification provides independent third-party fairness verification across the full portfolio, satisfying the compliance requirements of operators in the broadest range of regulated markets.

MGA + UKGC

Win Ways and Diamond Link Mechanics

Greentube's proprietary Win Ways mechanic replaces fixed paylines with dynamic winning path calculations, expanding the ways-to-win count with each reel extension. The Diamond Link progressive jackpot series and Diamond Mystery feature set layer additional prize structures onto core game experiences, driving engagement across both casual and high-value player segments.

Win Ways

Game Catalogue

Top Greentube Casino Games

Six flagship titles from Greentube's 300+ game catalogue, available to OHS Gaming operators with full HTML5 delivery and multi-jurisdiction certification.

Book of Ra Deluxe

The most iconic slot in European casino history. An ancient Egypt-themed 5-reel, 10-payline game featuring the Book of Ra as both wild and scatter. Free spins reveal an expanding symbol that transforms entire reels, delivering massive consecutive wins across the bonus round.

Expanding Symbol

Sizzling Hot Deluxe

A classic fruit machine brought to perfection online. Five reels, five paylines, and the legendary Sizzling 7 symbols combine with a scatter-triggered gamble feature and risk ladder. The simplicity of the mechanic pairs with the brand familiarity that drives cross-demographic player appeal.

Classic Fruit

Lucky Lady's Charm Deluxe

A charm-themed 5-reel, 10-payline slot built around luck symbols including ladybugs, horseshoes, and four-leaf clovers. The Lucky Lady wild multiplies wins, while the free spins bonus awards up to 15 spins with a 3x multiplier, delivering consistent mid-volatility session depth.

Wild Multiplier

Dolphin's Pearl Deluxe

Ocean-themed 10-payline slot featuring an expanding wild dolphin during free spins. Part of the Deluxe series that brought Novomatic land-based hits to online, the dolphin wild expands to cover full reels during the bonus round, delivering strong win potential across each free spin sequence.

Expanding Wild

Columbus Deluxe

An exploration-themed slot following the journey of Christopher Columbus across a 5-reel, 10-payline grid. The compass scatter symbol awards free spins, while the ship wild provides substitution across all reels. The Deluxe edition adds the popular risk ladder gamble feature to the classic framework.

Adventure Slot

Lord of the Ocean

Ancient Greece-themed slot with 10 paylines and an expanding wild Poseidon free spins feature. With strong appeal in German-speaking and Eastern European regulated markets, the game awards free spins with a randomly selected expanding symbol that covers full reels during the bonus round.

Expanding Wild

Technology

Core Game Mechanics

The signature engineering and design foundations powering Greentube titles across the OHS Gaming operator network.

Expanding Symbol Free Spins

The defining mechanic of the Book of Ra series: at the start of the free spins round, one symbol is randomly selected as the expanding special symbol. When that symbol appears anywhere on a reel during the bonus, it expands to cover the entire reel, paying on all positions. The mechanic creates massive win potential from a single symbol landing, which is why the Book of Ra series has sustained cross-market player engagement for over two decades. Comparable expanding symbol mechanics appear in NetEnt's Starburst and selected other classic titles.

Random symbol selected per bonus round
Full reel expansion on any position
Signature of the Book of Ra franchise

Win Ways Dynamic Paylines

Greentube's proprietary Win Ways mechanic replaces traditional fixed payline grids with a dynamic calculation system. As symbols land, all adjacent left-to-right combinations across all symbol positions on a reel are counted as winning paths. In titles with reel height variation, Win Ways counts escalate as the reel array expands, dramatically increasing the number of active winning combinations and delivering a fundamentally different pay structure from standard fixed-line formats.

Dynamic winning path calculation
Scales with reel height expansion
Compatible with Diamond Link jackpot layers

Diamond Link Progressive Jackpots

The Diamond Link series overlays a multi-level progressive jackpot network onto Greentube's core slot engines. Mini, Minor, Major, and Grand jackpot tiers accumulate from wager contributions across the linked game network, with the Grand jackpot resetting at a guaranteed seed value. The jackpot trigger mechanic activates independently of the base game outcome, making every spin eligible regardless of reel result, which sustains engagement across all stake levels.

Four-tier jackpot network (Mini to Grand)
Spin-independent jackpot trigger
Guaranteed Grand jackpot seed on reset

Risk Ladder Gamble Feature

A Novomatic signature mechanic carried through the Greentube online portfolio: after any base game win, players can optionally enter the risk ladder to double or quadruple their prize. The ladder presents a card-suit or color choice, advancing up a prize multiplier scale with each correct selection. Players may collect winnings at any rung, creating optional risk decisions that extend session engagement without altering the certified base game RTP.

Optional post-win prize doubling
Collect-or-gamble decision at each rung
Separate from base game RTP calculation

Add Greentube to Your Platform via OHS Gaming

Access the full Greentube catalogue of 300+ classic and modern casino games through a single OHS Gaming integration. Our platform connects operators with Greentube alongside 145+ additional providers, including NetEnt, Pragmatic Play, and Evolution, for a complete premium casino offering.

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