Decay

Decay Slot Review

A carousel still reads Love Ride in hand-lettered paint, and nobody is riding it. Decay is an abandoned funfair the undead have claimed, and Hacksaw Gaming have built their grimmest slot inside it: rotted clown suit shambling in the foreground, silhouettes drifting past a dead ferris wheel, red spatter bleeding in from every corner. The claim worth arguing is this: the ugliness is the point. Where most horror slots polish their monsters until they’re wallpaper, Decay’s diseased, deliberately unlovely look is the reason its feature hits land at all, because the game never spends a moment pretending to be pretty.

It runs at 96.27% RTP with high volatility, stakes from €0.10 to €100, and a 10,000x max win on a 6×5 grid. Underneath the grime sits a respin system that builds as it goes, and it’s the reason to keep spinning when the midway goes quiet.

Base Game & Features

Decay plays out on a 6×5 grid with 35 fixed paylines. Wins form from adjacent reels, left to right, and only the highest combination on each line counts. Ordinary spins resolve quickly enough that the quiet stretches never drag, which matters in a game where features arrive in waves.

Around the grid, the artwork doesn’t let up. A derelict Cafe pavilion mirrors the carousel on the right, the reels are smeared with arterial red that bleeds in from the corners, and dead weeds and scrub grass fill the bottom edge in front of the grid. It’s busy without being noisy, and the portraits that land on the reels look diseased rather than cartoonishly gory.

Wilds appear mainly through the feature work, where they’re one of the two possible replacement symbols. Otherwise this is traditional five-reel territory, and the game knows it.

SwitchSpins

Land the Switch scatter symbol and the respins begin. The sequence runs in a fixed order:

• The game marks a selection of symbols on the grid as replacements
• Those symbols are swapped for either the highest-paying symbol in the game or wilds
• Between one and ten respins play out with the replacements held in place
• A new Switch symbol landing during the set adds another symbol type to the pool and awards further respins

When the set ends, the selected symbols reset to normal, unless you’re in Total Takeover mode, where nothing resets at all. That single difference is what the whole bonus structure hangs on.

Scatter Symbols

Three different scatters drive Decay, and each one opens a different door:

• Switch scatter – triggers SwitchSpins from any spin
• Mad Scientist scatter – three at once trigger the Mad Scientist free spins
• Total Takeover scatter – three at once trigger Total Takeover, from the base game or from inside Mad Scientist

Decay Bonus Features & Free Spins

Mad Scientist Free Spins

Three Mad Scientist scatters at the same time in the base game award 10 free spins, with a higher chance of landing the Switch symbol than the base game offers. It’s a straightforward lift to the respin engine, and it can start slowly before a couple of strong Switch sequences make the round worthwhile.

Land three Total Takeover scatters during the round and the bonus upgrades on the spot: you move straight into the stronger feature with a full 10 spins restored. There’s a real sense of earning the upgrade when it arrives naturally, and it changes what the round is capable of.

SwitchSpins work the same way inside both free-spins rounds as they do in the base game: one to ten respins, replacements drawn from the highest payer or wilds, extra Switch symbols extending the set. What differs is what happens to the replacements once a set finishes, and that’s where the two bonus rounds split.

Total Takeover Free Spins

Three Total Takeover scatters at the same time, in the base game or inside Mad Scientist, award 10 free spins with a raised Switch symbol chance. Everything the feature does flows from one rule change:

• All selected replacement symbols are saved progressively – they don’t reset between SwitchSpins sets
• The screen can eventually fill completely with the highest-paying symbol or wilds
• Three more Total Takeover scatters during the round award 4 additional free spins

Because the pool only grows, later spins carry more potential than earlier ones. The dream scenario is a grid saturated with premium symbols and wilds, and the feature is built entirely around getting there.

FeatureSpins (Bonus Buy)

The BUY BONUS button opens four FeatureSpins options, each guaranteeing certain features on every spin until disabled, priced from your current bet level:

• BonusHunt FeatureSpins – 3x stake per spin, 96.26% RTP, very high volatility
• Switch FeatureSpins – 20x stake per spin, 96.16% RTP, extreme volatility, a Switch symbol guaranteed on every spin
• Mad Scientist – 110 times stake, 96.26% RTP, high volatility
• Total Takeover – 250x stake, 96.26% RTP, very high volatility

The cheap tier is the one that creeps up on you. Twenty times stake per spin still buys just one spin at a time, and a run of Switch setups that go nowhere drains a balance faster than the 250x total ever suggests, because each purchase feels small on its own.

Our Honest Verdict

Most of a session on Decay is spent waiting for the Switch symbol, and the funfair’s grim stillness makes that easier to sit through than it has any right to be. You come for one thing: a bonus that grows while you’re inside it. Total Takeover delivers exactly that, and watching the grid edge towards premium symbols while the collected replacements pile up is the best stretch of the game by a distance.

The letdown is everything around it. The base game can go genuinely quiet, SwitchSpins sets often fizzle when the replacements don’t line up, and the strongest round sits behind a 250x buy that most balances can’t justify.

It suits patient players who like a bonus that improves as it runs, and it’ll leave cold anyone who needs something happening on every spin. For the right player, the midway is well worth a wander after dark.

Decay FAQs

• What is SwitchSpins in Decay?

  SwitchSpins is a respin feature triggered by the Switch scatter symbol. Selected symbols are replaced with either the highest-paying symbol in the game or wilds, and between 1 and 10 respins play out. A fresh Switch symbol arriving mid-feature adds another symbol type to the replacement pool and grants further respins.
• How do you trigger the Mad Scientist free spins in Decay?

  Land 3 Mad Scientist scatter symbols at the same time in the base game. That awards 10 free spins with a higher chance of landing the Switch symbol than the base game offers. The round can also upgrade mid-way if the Total Takeover scatters land.
• What is the difference between Mad Scientist and Total Takeover?

  Both award 10 free spins with a raised Switch symbol chance. In Mad Scientist, selected replacement symbols reset after each SwitchSpins set ends. In Total Takeover they’re saved progressively, so the replacement pool keeps growing and the screen can eventually fill completely with the highest-paying symbol or wilds.
• Do replaced symbols reset between SwitchSpins sets?

  Yes, in the base game and in Mad Scientist the selected symbols reset once a SwitchSpins set ends. The exception is Total Takeover mode, where replacements stay saved between sets and accumulate across the whole round.
• Can you retrigger the Total Takeover bonus?

  Yes. Landing 3 Total Takeover scatter symbols during the Total Takeover round awards 4 additional free spins. Triggering Total Takeover from inside Mad Scientist also restores your remaining spins to a full 10.
• What is the RTP of Decay?

  Decay runs at 96.27% RTP in its default configuration. The FeatureSpins buy options carry their own figures: 96.26% for BonusHunt FeatureSpins, Mad Scientist and Total Takeover, and 96.16% for Switch FeatureSpins.
• What stakes does Decay accept?

  Stakes run from €0.10 to €100.00 per spin, with all four FeatureSpins buy options priced as multiples of your current bet level.
• How much do the FeatureSpins buy options cost?

  BonusHunt FeatureSpins cost 3x stake per spin, Switch FeatureSpins 20x, Mad Scientist 110 times stake and Total Takeover 250x. Each option guarantees certain features on every spin until you disable it.