Steam Engine Riches

Last updated on October 5th, 2025

Steam Engine Riches Review

Mondoplay is powering up the slot machine scene with its innovative release, Steam Engine Riches. Building on the captivating appeal of the Steampunk genre, this title injects a high-pressure surge of mechanical ingenuity and modern features into a visually stunning package.

The result is a uniquely feature-packed online slot that promises a world of brass gears, dynamic gameplay, and industrial-sized win potential. With powerful Expanding Wilds, a rewarding Nudge Feature, and four impressive Fixed Jackpots, this slot is engineered for maximum excitement. Prepare to enter a realm where Victorian invention and mechanical fortunes collide in a cloud of steam.

Advantages & Disadvantages

Theme & Design

Steam Engine Riches immediately captures the player’s attention with its masterful and brilliantly polished design. The game’s backdrop is a mysterious engine room, filled with industrial pipes, glowing gauges, and complex machinery, creating the perfect stage for a display of mechanical power. The overall aesthetic is immersive and premium, elevating the Steampunk theme to a truly impressive status. The animations are sharp and impactful, especially when the Wild symbol expands with a clatter of gears or when the jackpots trigger with a blast of steam, adding to the game’s lively feel.

The symbols are a creative fusion of classic industrial imagery and mechanical elements. The high-value symbols are represented by icons like a mechanical gauntlet, a pair of brass binoculars, and a leather-bound book, but each has been given a polished, modern look. The lower-value symbols are a series of metallic royals, all designed with crisp, high-definition graphics that pop against the dark reels. The soundtrack complements the visuals perfectly, with an industrial, rhythmic tune that evokes a sense of invention and anticipation, punctuated by satisfying mechanical sound effects for wins and feature triggers.

Features

Kicking off the action on a 5-reel, 3-row grid with 243 ways to win, Steam Engine Riches delivers an engaging, medium-volatility experience, backed by a solid 96% RTP and an impressive maximum win of 5,000x your stake.

Steam Engine Riches delivers a dynamic and feature-rich experience. In the base game, players will encounter Stacked Mystery Symbols on every reel, which all transform into the same symbol to create winning opportunities.

The main attraction is a special Multiplier Wild Reel that appears exclusively on reel 3, nudging to fill the entire reel and awarding a random multiplier of up to 10x. This feature also includes a Second Chance Respin on non-winning spins.

The game’s primary bonus is a Hold & Win feature, triggered by landing six or more Bonus symbols, where players collect cash prizes and aim to win one of four fixed jackpots, including a Grand Prize for filling the entire grid.

1. Stacked Mystery Symbols

• Each reel contains stacked positions for Mystery Symbols.
• After each spin, all Mystery Symbols on the screen transform into the same randomly selected paying symbol.

2. Multiplier Wild Reel (Reel 3 Only)

• A special Wild Reel symbol appears only on the third reel.
• Nudge Feature: If a partial stack of the Wild Reel lands, it will automatically nudge up or down to cover the entire reel.
• Random Multiplier: Once the reel is full, it randomly awards a win multiplier of 2x, 3x, 5x, 8x, or 10x, which applies to any winning combination it is part of.
• Second Chance Respin: If the full Multiplier Wild Reel does not result in a win, it is held in place for a free respin of the other four reels, offering a second chance to win. This can only happen once per spin.

3. Hold & Win Bonus Feature

• Trigger: The bonus is activated by landing 6 or more scattered Bonus symbols anywhere on the reels.
• Respin Mechanic: The feature begins with 3 respins. The triggering Bonus symbols lock in place, and only new Bonus symbols can land on the empty positions. Each new Bonus symbol that lands also locks in place and resets the respin counter back to 3.
• Prize Collection: The bonus round ends when no respins remain or when all 15 positions are filled. The values of all locked Bonus symbols (which range from 1x to 10x the bet) are then added together and awarded.
• Fixed Jackpots:
  • During the bonus, special MINI, MINOR, and MAJOR Bonus symbols can land, awarding their corresponding fixed jackpot prizes.
  • Filling all 15 positions on the grid with any Bonus symbols instantly awards the top-tier GRAND prize.

Final Thoughts

Steam Engine Riches is a truly exceptional offering from Mondoplay, representing a perfect marriage of a popular niche theme and innovative, feature-rich gameplay. Its medium volatility and solid 96% RTP make for a thrilling and suspenseful session, where the bonus features provide a constant sense of excitement and huge win potential.

While the base game is enjoyable, the real mechanical magic comes from the interactive Hold and Win bonus round and the clever Expanding Wilds feature, which holds the key to the game’s impressive 5,000x maximum win. Whether you’re a fan of Steampunk worlds or a player seeking innovative and layered bonus rounds, Steam Engine Riches slot machine delivers a polished, thrilling, and mechanically rewarding experience that is not to be missed.

Play Steam Engine Riches

• Provider: Mondoplay
• Release Date: 17.07.2024
• Type: Video Slots
• RTP: 96%
• Variance: Medium
• Max Win: x5000.00
• Min Bet ($, €, £): 0.20
• Max Bet ($, €, £): 10
• Layout: 5×3
• Betways: 243
• Features: Additive Symbol, Bonus Game, Bonus Symbols, Cash Collector, Expanding Symbols, Substitution Symbols, Hold and Win, Multiplier, Mystery Symbol, Nudge Feature, Random Multiplier, Respins, Stack, Wild, Wilds with Multipliers
• Theme: Book, Future, Mystic
• Technology: JS, HTML5
• Game Size: 8.3 MB
• Last Update: 25.09. 2025

Frequently Asked Questions (FAQs)