Money Cart 4 (Relax Gaming) Slot Review

Money Cart 4: Slot Overview 

Money Cart 4 rolls onto the tracks as the latest addition to Relax Gaming’s highly popular series, offering a streamlined, fast-paced version of its heavyweight sibling Money Train 4. Released on February 6, 2024, this game is yet another example of Relax’s strategy to provide thrilling Hold & Win-style experiences, especially tailored for regions where bonus buys are restricted. 

Like the previous Money Cart titles, this edition cuts the base game entirely and jumps straight into the heart-pounding action of bonus round spins. The goal? Trigger the re-spin feature and watch an array of special symbols unleash chaos across the grid. While it dials down the payout potential compared to Money Train 4—capping wins at 15,000x the bet—it offers something just as valuable: more frequent engagement, less downtime, and greater access to those elusive, game-changing modifiers. 

With an RTP of 96%, high volatility, and a flexible bet range of €0.10 to €60, Money Cart 4 invites players into a dark, mechanical world of big risks, tactical spins, and steely nerves.

Design and Graphics 

Money Cart 4 adopts a colder, more futuristic design than its predecessors. The locomotive here isn’t steam-powered—it’s riding on maglev rails, illuminated by cold blue lights and set against a sci-fi nighttime landscape. It feels like Money Train meets Rogue One, with a gritty industrial aesthetic wrapped in a sci-fi cloak.The 6-reel grid expands vertically during gameplay, initially starting with 4 visible rows, but with top two and bottom two rows locked. As gameplay progresses and reels fill with symbols, these locked rows can be activated, expanding the board up to 8 rows high. This adds not only visual impact but also strategic suspense, as every additional row significantly increases symbol real estate. 

The design clarity is solid—each symbol, particularly the special feature icons, is distinct and sharp. Animations for actions like symbol activations, respin resets, or expanding reels are smooth and visually satisfying, helping players follow the action even when multiple modifiers fire at once.

Gameplay Mechanics 

There’s no traditional spinning in Money Cart 4. Instead, every round centers on the Hold & Win respin mechanic, which kicks in when three or more bonus symbols land during a single spin. The moment this happens, the real action begins: 

3 Respins are awarded. 

Landing a new symbol resets the respin counter to 3. 

Symbols lock into place, holding their positions until the round ends. 

When an entire row is filled, it unlocks an additional row—either at the top or bottom (maximum of 4 unlocks possible). 

Gameplay continues until either the spin counter hits 0 or the maximum win of 15,000x is achieved. 

The board is populated with coin-value bonus symbols and a massive arsenal of feature symbols, many of which borrow from past games in the series. But here, thanks to the more frequent activation rate, players finally get to see the full roster of these modifiers in action more often.

Sound and Music 

The soundtrack of Money Cart 4 veers into cyber-industrial territory, reflecting the game’s futuristic tone. The background hum of the maglev train, blended with mechanical echoes and synthesizer pulses, keeps tension simmering throughout each spin. 

Sound effects emphasize impact moments: when special symbols activate, a bold electronic clang underscores the action. When a row unlocks or the spin counter resets, ascending audio cues build anticipation. Altogether, the sound design creates a tense, immersive experience that complements the cold precision of the grid’s aesthetic.

Bonus Features 

This is where Money Cart 4 flexes its mechanical muscles. The feature list is vast, offering an unprecedented variety of special symbols that influence play in dramatic and often unexpected ways. Here’s a breakdown:Base Symbols 

Bonus Symbols: Carry a coin value between 1 and 10. 

Collector: Gathers all visible coin values and adds them to its own. 

Persistent Collector: Does the same every spin. 

Adjacent Modifiers 

Adjacent Collector / Persistent Adjacent Collector: Collects only from adjacent symbols, rather than the whole board. 

Adjacent Payer / Persistent Adjacent Payer: Adds its value only to adjacent symbols. 

Payer-Type Symbols 

Payer: Adds its value to all other visible symbols. 

Persistent Payer: Does this each spin. 

Collector-Payer: Collects values, then pays updated total to selected targets. 

Persistent Collector-Payer: Applies this every spin to 3–5 symbols. 

Sniper-Type Symbols 

Sniper: Doubles the values of 3–8 other symbols (can hit the same symbol multiple times). 

Persistent Sniper: Keeps doubling target symbols on every spin. 

Utility & Enhancer Symbols 

Arms Dealer: Converts 1–4 symbols into feature symbols which then activate. 

Persistent Arms Dealer: Does this every spin. 

Unlocker: Unlocks one of the locked rows (top or bottom). 

Reset Plus: Adds +1 to the spin counter. 

Upgrader: Upgrades 1–3 standard feature symbols to Persistent versions. 

Persistent Shapeshifter: Morphs into a different feature type after every spin. 

Resurrection Mechanics 

Necromancer / Persistent Necromancer: Revives 2–7 used feature symbols. Persistent versions act every spin. 

This colossal line-up means that no two rounds feel the same. Some symbols act immediately, others every spin, and their interactions can create runaway multiplier chains—especially if persistent versions are in play. It’s a mechanic lover’s dream, providing lots of opportunity for strategic watching and potential snowball moments.

Betting Options and Payouts 

Money Cart 4 accommodates a broad player base with its versatile bet range of €0.10 to €60 per round. While the maximum win of 15,000x the bet is lower than the 150,000-coin cap touted by Money Train 4, it remains a very respectable ceiling—especially considering the bonus feature triggers much more frequently. 

A key point of note: Money Cart 4 uses coin values instead of multipliers. This means one coin = 0.1x your bet. So, to achieve the 15,000x max win, a player would need to land enough symbols totaling 150,000 coins. This math model is simpler in some ways, but can be confusing for those accustomed to multiplier-based calculations from previous titles. 

The RTP is 96%, which is competitive, though not industry-leading. Still, the higher frequency of feature activation and richer bonus interaction easily compensates for this.

Conclusion 

Money Cart 4 is a masterclass in controlled chaos. By stripping away the base game entirely and amplifying the re-spin bonus feature, Relax Gaming delivers a game that is constantly engaging and visually thrilling. The inclusion of over 20 feature symbols, many with persistent behavior, makes each round feel like a unique mini-adventure, full of tension, surprise, and strategic depth. 

While its 15,000x win cap might not rival the jaw-dropping top prizes of Money Train 4, it feels like a fair trade-off considering how much more frequently players get to access the bonus action. The coin-value system may take some getting used to, but once players wrap their heads around it, the game’s inner workings become addictively clear. 

For fans of the Money Cart series or players who enjoy Hold & Win mechanics, Money Cart 4 is a no-brainer. It’s fun, feature-rich, and relentless in its delivery. And for those who just want to see those elusive special modifiers finally do their thing? This game might be the most satisfying ride Relax Gaming has delivered to date.