Rust and Riches Slot Review
A crowned mutant looms out of the neon-green haze, lit by a column of glow from above, and the reel cage below it is bolted shut like a bunker hatch sunk into a radioactive swamp. Rust and Riches puts its biggest multipliers in the base game rather than hiding them behind a bonus, and that single decision changes how every ordinary spin feels. Gaming Corps runs it on a 5×5 grid at 96.04% RTP, mid to high volatility, with a maximum win of 10,000x the bet.
It sits in the studio’s catalogue alongside Gates of Hellfire and Udder Carnage: Holy Cow, and it shares their taste for extremes. The mutation mechanic is what makes this scrapyard worth picking through.
Mutated Symbols
Every classic symbol in the game can mutate at random during play. When it does, a multiplier is printed straight onto the symbol itself, and there’s no missing it: the affected icons sit on the grid glowing their value at you. The game calls this its core idea, and it’s right to.
- x2
- x3
- x5
- x7
- x10
- x12
- x25
- x50
- x100
Mutated symbols pay exactly like their ordinary counterparts and count for the same combinations. The multiplier is the only difference, and when a winning line contains more than one mutated symbol, their multipliers add together. Three mutated symbols each showing x2 in one line apply a combined x6 to that win. It’s addition, not multiplication, which keeps the maths legible even when the grid is busy.
The spread matters as much as the arithmetic. Nine tiers run from x2 to x100, and the gaps widen as they climb: x2, x3, x5 cluster at the bottom, while x25, x50 and x100 sit at the top of the ladder. A single x100 mutation on a winning line can outpay a whole run of smaller mutated wins, so the value of any given spin depends heavily on which symbols mutated, not just how many.
Because mutation applies to classic symbols rather than introducing new ones, the paytable structure stays fixed. A mutated symbol is still the same symbol for combination purposes; it simply carries its multiplier into any win it helps form. That’s the whole of the base game’s extra layer, and it’s a clean one.
One other symbol matters in the base game. The Bonus symbol, marked FS, is the route into both of the game’s bonus modes, and it takes three or more on a single spin to start counting.
Radiation Max
Land at least eight mutated symbols on a single spin and a Feature Spin fires. Nothing about the payout rules changes: same maths, same symbol behaviour, no new mechanics. What changes is the guarantee that eight or more mutated symbols are present on the spin.
That guarantee is the whole point. Eight-plus multipliers on one grid means a real chance of combined values stacking through several winning lines at once, which is where the base game’s biggest non-bonus payouts live. A grid carrying mutations at x12, x12 and x3 has three separate multipliers waiting to be added into whatever those symbols help win.
There’s no spin limit and no follow-on round to a Feature Spin; it resolves as a single enhanced spin and the game returns to normal play. The only other route in is the buy menu, covered further down.
Infectious
Three Bonus symbols on a single spin trigger Infectious, the first of the two bonus modes. It runs as a series of spins with mechanics the base game doesn’t have, and it’s the more inventive of the two rounds.
Life Points
The bonus starts with 10 life points and continues until every one of them is gone. Two symbols work directly on that total:
- Radioactive symbols strip 1 to 3 life points
- Heal symbols restore 1 to 3 life points
The swings on both sides are symmetric, so a round’s length is genuinely up in the air. A bad run of radioactive hits can burn through the opening ten points in a handful of spins, while heals landing at the right moments can extend the round well past what the starting balance suggests. The bonus ends only when the total hits zero; there’s no fixed spin count to fall back on.
Global Multiplier
The second mechanic is a global multiplier that only exists inside the bonus. Whenever a winning line includes one or more mutated symbols, their multipliers feed into that global total instead of just boosting the current win. The global multiplier then applies to the payouts of future spins in the round.
The two systems push against each other in a way that gives the round its shape. Every spin that drains life points brings the bonus closer to ending, and every mutated win makes the remaining spins worth more. The more mutated wins you collect, the higher the global multiplier climbs, and the longer your life points hold out, the more spins that growing number gets to work on.
Atomic
Landing four or five Bonus symbols on a single spin triggers Atomic, the rarer of the two modes, and grants 10 Free Spins. It introduces its own reel behaviour while keeping the base game’s payout rules intact, so you’re not relearning how wins are formed halfway through.
Mutated symbols still appear here, and their multipliers still apply normally when they form part of winning combinations. In a game built on mutation, that continuity is the design talking: the free spins sharpen the mechanic rather than replace it. The reel behaviour is the round’s own contribution, and it’s the difference between this mode and the base game beyond the fixed spin count.
Bonus Buys
All three of the game’s features can be bought outright from the base game, at three very different price points:
- Feature Spin (Radiation Max) – x20 the base bet, guaranteeing 8 or more mutated symbols
- Infectious – x100 the base bet, triggering the life point bonus series
- Atomic – x250 the base bet, triggering the 10 Free Spins mode
The ladder is steep and evenly spaced in intent: x20 buys one guaranteed spin, x100 buys the round with the open-ended life point clock, and x250 buys the rare mode with its fixed ten spins. The Feature Spin at x20 is the accessible end. Atomic at x250 is a serious commitment to a round that’s rare precisely because it’s the game’s premium mode.
Our Honest Verdict
Overall Rating: 7.8/10
Playing Rust and Riches is watching a dirty grid and hoping something on it turns, and the reason to choose it is that the turning happens outside the bonus as often as in it. The swamp stays murky, the mutant stays looming, and no two spins feel identical because mutation doesn’t wait for a trigger.
The strength is Infectious. Life points give the round a real clock, and heals arriving when radiation bites is the most genuinely tense moment the game produces. The weakness is the ceiling: 10,000x is thin for mid to high volatility, and 250x the bet to reach the premium mode locks the best content behind a serious outlay.
If you like a base game that can pay without asking permission, this is yours. If you play mainly for free-spins rounds and big ceilings, the wasteland will feel lean. There’s a richness buried in the rust, but you’ll dig for it.
Rust and Riches FAQs
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What is the RTP of Rust and Riches?
The RTP is 96.04%, calculated over one billion simulated spins. -
Is Rust and Riches high volatility?
It’s a mid to high volatility game, so expect a mix of lean spells and sharper payouts when the mutated multipliers land. -
What do mutated symbols do in Rust and Riches?
Any classic symbol can mutate at random, displaying a visible multiplier from x2 up to x100. When a winning line contains multiple mutated symbols, their multipliers are added together rather than multiplied. -
How does the Infectious bonus work?
Landing 3 Bonus symbols triggers it. You start with 10 life points, radioactive symbols drain 1 to 3 and heal symbols restore 1 to 3, while mutated wins feed a global multiplier applied to payouts on future spins until your life points run out. -
How do you trigger the Atomic bonus?
Land 4 or 5 Bonus symbols on a single spin. It grants 10 Free Spins with unique reel behaviour, while mutated symbols and their multipliers continue to work as normal. -
Can you buy the bonus on Rust and Riches?
Yes. A buy menu in the base game sells a guaranteed Feature Spin for x20 your bet, the Infectious bonus for x100, and the Atomic bonus for x250. -
What is the maximum win on Rust and Riches?
The maximum win is 10,000x your bet. -
When is Rust and Riches released?
Rust and Riches’ release date is 21 January 2026.
