Flux Slot

First Glance

Launched in 2014, Flux is an early example of Thunderkick’s experimental side before the Swedish studio moved into character-driven games.

Here, a sleek, space-minimal aesthetic replaces traditional slot iconography. Spinning geometric crystals glide through a deep cosmic void that mimics a flowing river of light.

While the stark backdrop inevitably shows its age compared to the slot provider’s more recent high-fidelity releases, the game maintains a remarkably clean and unhurried visual rhythm. The engine favours understated elegance over sensory overload. And gentle pulses of light mark winlines instead of destructive, high-energy explosions.

This visual restraint is matched by a hypnotic, slightly psychedelic ambient soundtrack. Which in turn maintains its appeal over extended sessions.

Ultimately, the Flux slot feels unusual for a Thunderkick slot. It drops heavy storytelling and focuses on abstract visuals, clean style, and mood. It makes it very different from story-led games like Esqueleto Explosivo.

Key Game Elements

Flux is intentionally kept simple. If you’re looking for complex storylines or cascading systems to navigate, you won’t find them here. There are just five reels, a clean grid, and a small but well-constructed set of mechanics that reward patience over aggression.

Symbols

The Flux online slot uses a compact symbol set split into three groups:

• Low-value symbols: geometric shapes (basic coloured forms)
• High-value symbols: premium glowing shapes (stars and spheres)
• Special symbols: Wild (W) and Scatter (B)

I find the symbol structure fairly flat. The low and high payouts are placed side by side. This provides stability to the base game, but a low level of fun. The big payouts only really appear in the bonus round.

Jordan Conroy Editor

Bonus System

Let’s start with the fact that the Wild symbol substitutes for all regular symbols and cannot replace the Scatter. Wild symbols stack on top of each other. This means that a single Wild can fill the entire reel, significantly increasing the frequency of wins compared to a single Wild in similar space-themed slots.

Three or more Scatter symbols activate the Free Spins bonus. Landing three, four or five Scatter symbols gradually increases the number of spins in three available modes:

• Mode 1: 16, 32, or 48 free spins with double spin payouts
• Mode 2: 12, 24, or 36 free spins with double spin payouts plus three extra rows added to the reels
• Mode 3: 8, 16, or 24 free spins with double spin payouts and three extra rows in total

The extra rows option significantly expands the grid, adding more symbol positions and increasing the chances of longer winning combinations. The double spin payout mechanic is active in all three modes, doubling the number of potential win lines during this feature.

The pay table below shows the main symbol payouts as multiples of the total stake:

Flux Pay Table

The next step is how to play Flux, including bets, controls, RTP, volatility, and demo mode.

Play Guide

5 reels, 3 rows, 15 paylines that trigger automatically with every spin. Flux offers a simple setup, and that’s what makes it so appealing. You don’t have to set anything up before you spin.

Bets here range from £0.10 to £100 per spin. Start with the lowest bet, as it’s a smart way to get a feel for the game. The bet, spin, autoplay, and paytable buttons are located at the bottom of the screen. Everything you need is in one place and easy to find.

Autoplay allows the reels to spin hands-free, and there’s also a speed setting. This is very handy, as slowing down the game actually suits Flux well, considering how calm and atmospheric the whole thing seems.

In terms of numbers, the Flux slot RTP is 96.2% with low to medium volatility. This means that payouts will be relatively frequent and small in value. If you are new to playing slots, playing at a lower volatility provides for a longer period before your emotions of pride are tempered by losing a lot of money.

During my casino test, Flux’s controls felt clean and responsive. Everything was clearly laid out. The autoplay feature is functional but basic, with limited stop conditions. I would recommend it if you’re a beginner who is playing in the £0.10–£1.00 range, as the low volatility is suitable for longer, more consistent sessions on a tight budget.

Jordan Conroy Editor

Our Test Results

Our team tested Flux to see how the slot performs during real play sessions:

I loaded Flux at £0.20 per spin and got the hang of it. The base game moves along quietly, with stacked wilds doing most of the heavy lifting. I liked watching a full reel turn into a wild mid-spin. Smaller wins came often enough to keep me playing, although nothing above the stake was there until the scatters appeared. Three silver Bs landed together around the 80th spin, opening up the bonus menu. I didn’t hesitate to choose 8 free spins with three extra rows. The grid stretched upwards, the reels felt more substantial, and the first wild to land in this expanded space immediately covered more combinations than anything I had seen in the base game.

Jordan Conroy Editor

Our Verdict

We find Flux to be a quiet and successful slot. It is unassuming, well-constructed, and honest in its offerings. It won’t suit you if you’re after high volatility or looking for jackpots. However, for a relaxed, low-pressure session on a modest budget, it consistently delivers good results. The three-mode bonus selection is a really smart design for a 2014 release, and the extended rows option remains one of the more visually attractive bonus formats in Thunderkick’s catalogue.

Before you play Flux slot, here are the significant pros and cons:

• Pros:
• Three selectable free spins modes
• Stacked Wilds can cover full reels
• Above-average 96.2% RTP
• Low-to-medium volatility suits smaller budgets

• Cons:
• Only 15 paylines in the base game
• No multipliers, gamble feature, or jackpot