| Provider | NetEnt |
|---|---|
| RTP | 96.54% - Compare RTPs |
| Volatility | Low |
| Reels | 5 |
| Paylines | 20 |
| Bet Range | £0.20 - £400.00 |
| Hit Frequency | 37.00% |
| Features | Wilds |
Sparks Slot Review
Sparks is a 5-reel, 3-row NetEnt slot with 20 fixed paylines, a 96.54% RTP, and one of the more interesting decisions you'll make before a spin: Expanding Wilds or Wandering Wilds? That pre-spin choice is the engine that drives everything in this game, and it's what sets Sparks apart from the crowd of NetEnt titles that surround it.
Released in 2014, Sparks has held up well. The crystalline, abstract theme - think geometric shapes crackling with neon energy against a dark void - hasn't dated as badly as some contemporaries, and the wild mechanics still feel genuinely clever rather than gimmicky.
Theme and Design
The name says it all. Sparks leans into a futuristic, electric aesthetic with high-paying symbols shaped like glowing crystalline shards in green, orange, blue, violet, and red. The lower-paying symbols are the usual 10-through-Ace playing card values, but NetEnt has given them a sharp, angular look that fits the overall style rather than feeling like an afterthought.
The background is deep space-dark, which makes the neon symbols pop without feeling garish. Animations are smooth when wilds trigger - there's a satisfying electric pulse when the big cloning mechanics fire. The soundtrack is ambient and understated, the kind of thing you can play for an extended session without wanting to mute it.
It's not the most elaborate visual experience NetEnt has produced, but Sparks was always about mechanics over spectacle. The design serves that goal well.
How to Play
Stakes in Sparks run from £0.20 to £400 per spin, making it accessible across a wide range of budgets. The 20 paylines are fixed - you can't reduce them.
Before you spin, you'll be asked to choose your win direction:
- Win One Way - standard left-to-right paylines, RTP 96.56%
- Win Both Ways - paylines pay left-to-right and right-to-left, RTP 96.54%
Win Both Ways sounds like the obvious pick, but it doubles the bet per spin to compensate, so the expected return per pound wagered is nearly identical either way. The practical effect is that Win Both Ways creates more frequent small wins, while Win One Way produces slightly larger individual payouts less often. Neither is objectively better - it comes down to preference.
Autoplay is available for between 10 and 1,000 spins, with advanced options to stop on a win or loss limit.
Wild Symbols
Sparks has two distinct wild types, and understanding how they differ is the key to enjoying this game.
Standard Wild (Blue W)
The standard wild is a glowing blue sphere with a white W. It can land anywhere on the reels and substitutes for all symbols except the Expanding Cloning Wild. Nothing unusual here - it fills gaps in winning combinations in the normal way.
Expanding Cloning Wild (Gold W)
This is the headline mechanic. The Expanding Cloning Wild - a gold-backed W - only appears on reels 2 and 4. When it lands, two things can happen:
- Expansion - the wild can expand upwards, downwards, or in both directions to fill the entire reel
- Cloning - whatever symbol sits immediately to the left of the wild gets replicated to the right, guaranteeing at least three matching symbols in a row
If both reels 2 and 4 land Expanding Cloning Wilds simultaneously, the cloning effect extends across reels 3 and 5 as well, potentially giving you a five-of-a-kind win on the cloned symbol. That's where the bigger payouts come from.
It's worth noting the wild can also expand without cloning, or it may stay as a single-cell wild. The expansion and cloning aren't guaranteed on every appearance - but when both wilds land on 2 and 4 and both expand fully, the result is one of the more dramatic moments a non-jackpot NetEnt slot can produce.
RTP and Volatility
Sparks sits at 96.54% RTP in Win Both Ways mode and 96.56% in Win One Way mode - both solidly above the industry average of around 95-96%. Low volatility means wins land fairly regularly, though they tend to be modest in size. The cloning wild is your best shot at a meaningful payout, but Sparks is fundamentally a low-variance game built for steady play rather than big swings.
There is no jackpot and no progressive element. The top fixed win from the premium crystalline symbol pays 200x your coin value for five of a kind.
Bonus Features
Sparks has no free spins round and no pick-me bonus game. The entire bonus value of the slot lives in the Expanding Cloning Wild mechanic. That's a deliberate design choice - NetEnt built the base game to be interesting enough on its own rather than dangling a bonus round as the only reason to keep spinning.
Whether that appeals to you depends on what you want from a slot. If you like the rhythm of watching wilds work their cloning logic on every session, Sparks delivers that repeatedly. If you play primarily for the anticipation of a bonus trigger, this probably isn't your game.
Verdict
Sparks is a well-executed low-volatility slot with a genuinely clever mechanic at its centre. The pre-spin choice between Win One Way and Win Both Ways gives you a small degree of control over how the game plays, and the Expanding Cloning Wild delivers satisfying moments even if the maths is working at a lower variance range.
It's often compared to Starburst - both are NetEnt's, both are low volatility, both are light on bonus features - but Sparks is the more mechanically interesting of the two. The cloning logic requires a bit of attention to understand fully, and there's a real difference between a routine spin and one where both cloning wilds land and expand across the board.
Not a game for high-volatility hunters. Very much a game for players who want solid RTP, regular action, and a base mechanic worth paying attention to.
RTP: 96.54% | Reels: 5 | Paylines: 20 | Volatility: Low | Provider: NetEnt
What is the RTP of Sparks?
Sparks has an RTP of 96.54% in Win Both Ways mode and 96.56% in Win One Way mode - both above the typical industry average.
Does Sparks have free spins?
No. Sparks has no free spins round and no bonus game. All the value comes from the Expanding Cloning Wild mechanic, which appears on reels 2 and 4.
What is the Expanding Cloning Wild in Sparks?
The Expanding Cloning Wild is a gold W symbol that lands on reels 2 and 4. When it appears it can expand to fill the reel and clones the symbol to its left across to the right, guaranteeing at least three of a kind. If both reels 2 and 4 land Expanding Cloning Wilds simultaneously, the clone effect can extend across all five reels.
What is the difference between Win One Way and Win Both Ways in Sparks?
Win One Way pays left-to-right on 20 paylines. Win Both Ways pays in both directions for twice the stake. The RTP is nearly identical either way - the main difference is that Win Both Ways produces more frequent smaller wins, while Win One Way delivers less frequent but larger individual payouts.
Is Sparks a high or low volatility slot?
Sparks is a low volatility slot. Wins land fairly regularly but tend to be modest in size. It suits players who prefer steady play over large, infrequent payouts.
Who makes the Sparks slot?
Sparks was developed by NetEnt, the Swedish game studio behind titles like Starburst, Gonzo's Quest, and Dead or Alive.
Where to Play Sparks
These online casinos carry NetEnt games including Sparks. Read our Donbet review or browse all casino reviews.
Sparks RTP and Variance
Sparks has an RTP of 96.54%, which is above average. See our highest RTP slots for the best returning games. Low volatility means frequent smaller wins - your balance stays steadier and sessions last longer. See more low volatility slots.
At the minimum bet of £0.20 per spin, a £10 deposit gives you 50 spins with a statistical expected return of £9.65. Read our slot betting strategy guide for tips on managing your bankroll.
More NetEnt Slots
If you enjoy Sparks, try these other NetEnt games available at the same casinos.
