Design and Theme
🖼️ Graphics
The design is in sci-fi style: the interface looks as if assembled from charred metal, with displays, pipes, and light indicators. In the background — a post-catastrophe scene: smoke, fire, a torn-open container of gold, a powerless robot, and an alien landscape. On the left, there’s a built-in respin counter, on the right — the current win and the denomination of the base symbol. Symbols flash inside techno-cells, like control elements. The static visuals emphasise the tension — all focus is on what happens inside the grid.
An interesting observation: the win counter updates before the animation starts — a small spoiler, even before everything plays out on screen.
🎶 Sound
Here it is not a soundtrack — but a sound scar after the catastrophe. The background music sounds like in the final scene of an alien film: everything has already happened, only smoke, ruins, and a calm, lingering echo remain. When spinning the grid, you hear dry electronic clicks, and the appearance of a bonus symbol is accompanied by a sharp metallic sound — as if a defence system was activated.
During respins, the music becomes more anxious and faster: not hysteria, but clear tension. As if something is brewing inside the system, and you can still change everything.
Mechanics
|
🥁 Grid size |
6x4-8 |
|
📊 Paylines |
❌ |
|
➕ Bonus game |
✅ |
|
🤑 Jackpot |
❌ |
|
💸 Extra bet / Ante bet |
❌ |
|
🪂 Fixed multipliers |
✅ |
|
♻️ Respins |
✅ |
|
❎ Gamble |
❌ |
There are no standard paylines or payouts. The base game brings nothing: the final amount depends only on the symbols and their effects during respins.
All numbers on the discs are “coins”. The rate is shown to the right of the grid: 1 coin = 0.10 of the stake. At the end of the round, all coin values are added together and multiplied by this rate, effectively becoming a multiplier on the stake (10 coins = x1, 100 coins = x10, etc.).
Special Symbols
There are so many symbols in Money Cart 4 that for the first 10 minutes, we were just reading what each one does. In total, more than two dozen effects: some accumulate, others distribute, some resurrect, others turn into anything. And all this can also be persistent — that is, working not once, but every spin. You can’t manage without a cheat sheet. Let’s break them down in order:
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Bonus Symbol: scatter. In the base part, it triggers respins. During the bonus, each such symbol turns into coins and shows a value from 1 to 10.
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Collector: collects all current values on the field and adds them to itself. Works once — at the moment it appears.
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Persistent Collector: at the end of each respin collects all values from other symbols and adds them to itself; its own value is not counted.
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Adjacent Collector: collects values only from the 8 neighbouring cells around it and adds them to its value. Works once — at the moment it appears.
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Persistent Adjacent Collector: at the end of each respin collects values from the 8 neighbouring cells, adds them to itself, and its own value is not counted.
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Payer: appears with a number and immediately adds it to all other symbols on the field. Does not boost itself; works once.
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Persistent Payer: each spin adds its value to all other symbols on the field. Does not work on itself, but can pump up others to serious numbers.
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Adjacent Payer: appears with a number and immediately adds it to all symbols around it (in 8 neighbouring cells). Does not boost itself. Works once.
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Persistent Adjacent Payer: at the end of each respin, adds its value to all 8 neighbouring symbols. Repeats this action every spin. Does not boost itself.
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Sniper: doubles the values of 3 to 8 random symbols on the field. Can choose the same target several times. Works once.
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Persistent Sniper: at the end of each respi,n doubles the values of 3–8 symbols on the field. Repeats the action each spin, can shoot the same symbols again.
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Collector Payer: selects 3 to 5 symbols, collects their values, adds them to itself, and then pays this sum back to the chosen targets.
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Persistent Collector Payer: each spin repeats the same scheme: selects 3–5 symbols, collects their values, adds them to itself, and returns the result to the same symbols.
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Arms Dealer: selects 1 to 4 coins and transforms them into special ones. New symbols trigger immediately.
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Persistent Arms Dealer: each spin transforms coins into one of the following special symbols — Collector, Payer, Adjacent Collector, Adjacent Payer, Sniper or Collector Payer — and it triggers immediately.
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Necromancer: revives 2–7 used non-persistent symbols. Can always bring back Collector, Payer, Adjacent Collector, Adjacent Payer, Sniper or Collector Payer. The same targets can be revived many times.
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Arms Dealer returns only if there is at least one coin on the field.
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Unlocker — if closed rows remain.
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Upgrader — if there is at least one symbol eligible for upgrade.
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Persistent Necromancer: each spin revives 1–7 non-persistent symbols with the same restrictions as the normal Necromancer.
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Persistent Shapeshifter: after each spin turns into a random special symbol from the list Collector, Payer, Sniper, Collector Payer, Arms Dealer or Unlocker. Restrictions are the same as Necromancer.
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Unlocker: opens one closed row.
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Reset Plus: increases the respin counter reset value by +1. Can only drop once during respins.
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Upgrader: converts 1 to 3 special symbols into their Persistent version.
Bonus Game
The trigger is simple: land at least 3 symbols anywhere on the active field. If among them there are golden special symbols, they are revealed and immediately perform their action, even before the first respin.
Then the round starts with three “lives”. Each new symbol resets the counter back to 3 (or to 4, if Reset Plus has already dropped). All numbers on the screen are counted in coins.
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After each respin, all visible special symbols act one after another, top to bottom, left to right.
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If a row is filled or an Unlocker lands, a new row of the grid opens (up to +4 rows).
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Respins continue until the lives run out or the whole field is filled.
After each spin, the interim amount is displayed in the win counter to the right of the field, in coins. When the round ends, the win is converted into a cash sum.
RTP, Volatility, Max Win
The RTP of Money Cart 4 is 96.00%. Volatility is high, as is fitting for a slot without a base game. The maximum win is x15,000 of the stake.
Our Verdict
Respins can trigger quickly — within 3–4 spins — or stubbornly not come for 10–15 rounds. That’s normal: the base game here is pure formality; it pays nothing, everything starts with the bonus.
Inside respins, the order is unpredictable: symbols appear however they will. Among those that really felt like an event — Persistent Sniper and Persistent Collector. In fact, almost all Persistents look powerful, even if in the end nothing adds up.
During the session, we caught one bonus with a win of about x100 of the stake, the rest — more modest, in the range up to x40. At the same time, the balance holds confidently, without dips — more stretched out than drained.
There is no point memorising all 28 symbols in advance: what each one does becomes clear as you play. The interface hints, actions go sequentially, and everything is fairly clear. If you want something similar:
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Tony Gambler — there are several bonus modes, including “three lives” with symbols like “collector”;
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Coin Volcano — simpler in mechanics, but also entirely based on Hold & Win.
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