Slot machine simulator
Pick a slot, set your bet per line, press Spin and watch the RTP, hit frequency and volatility play out with play chips.
The simulator needs JavaScript.
How to play the slot simulator
- Pick a slot: Brass Bells, Midnight Sequins or Sapphire Sevens.
- Choose a bet per line. Your total bet is shown next to it.
- Press Spin. Winning lines light up and the win is added to your balance.
- Read the three numbers above the reels: RTP, hit frequency and volatility.
Keep the same bet for a few hundred spins, then switch slots and compare how your balance moved.
What RTP, hit frequency and volatility mean
- RTP (return to player): Brass Bells has 96.15%. Over many spins it tends to pay back that share of all bets, so the slot keeps about 3.85% of everything you bet on average.
- Hit frequency: Brass Bells pays something 1 in 3.1 spins. Many of those wins are smaller than your total bet.
- Volatility: how far results swing from spin to spin. Midnight Sequins has a standard deviation of 7.83 bets per spin – rare big wins, long dry runs.
A win that lights up a line can still be less than what you bet on that spin – check the balance, not the lights.
Compare the three teaching slots
| Slot | Return (RTP) | A win every | Volatility (SD) | Top win (bets) |
|---|---|---|---|---|
| Sapphire Sevens classic 3 reels, 1 line, low volatility | 95.93% | 4.1 spins | 5.18 | 400 |
| Brass Bells 5 reels, 10 lines, low volatility | 96.15% | 3.1 spins | 2.96 | 267 |
| Midnight Sequins 5 reels, 10 lines, high volatility | 95.98% | 4.4 spins | 7.83 | 1266 |
Exact numbers from every possible reel stop. These are our own teaching slots; real casino slots set their own numbers.
- Brass Bells – five reels, ten lines, low volatility: RTP 96.15%, hits 1 in 3.1 spins, top win 267 bets.
- Midnight Sequins – five reels, ten lines, high volatility: RTP 95.98%, hits 1 in 4.4 spins, top win 1266 bets.
- Sapphire Sevens – classic three reels, one line: RTP 95.93%, hits 1 in 4.1 spins, top win 400 bets.
What high volatility looks like
Each line is one session on Midnight Sequins with the same bet. A few sessions jump up after one big win; most slide down slowly.
The house edge stays the same in every session. Volatility changes how bumpy the ride is, not who wins over time. More on slot volatility.
Free online pokies and real slots
If a real slot does not show its RTP, assume you do not know it.
In Australia slots are called pokies – these three free online pokies work the same way, with play chips only.
Real casino slots have their own numbers, set by the game maker and the casino. See slot RTP, how slot machines work and are slots rigged.
Questions
Are these free pokies the same as real casino slots?
They work the same way, but the three slots here were made for teaching and their numbers are exact. Real casino slots have their own RTP, hit frequency and volatility, set by the game maker and the casino.
What does RTP mean on a slot machine?
RTP is the share of all bets a slot tends to pay back over many spins. Brass Bells has an RTP of 96.15%, so on average the slot keeps about 3.85% of everything you bet.
Is a high or low volatility slot better?
Volatility by itself does not change your odds – the RTP does. Here Brass Bells (96.15%) and Midnight Sequins (95.98%) have almost the same RTP; Brass Bells pays small wins often, while Midnight Sequins pays rarely but bigger.
Can a slot simulator teach me how to win at slots?
No. It shows how RTP and volatility work, but no method beats the house edge, and over time the slot tends to keep its share of all bets.