Endorphina

Chance Machine 20

Slots Classic Slots Video Slots Gems Star Crown Clover Royal

Classic Chance Machine edition distinguished by 20 paylines

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96%

return to player

Volatility

—

variance

Max win

3,000×

top multiplier

Min bet

$0.20

per spin

Reels

20 lines

Player rating

4.3 ★

19 votes

DEMO Play free, no signup

Endorphina

Embed on your site

4.3 / 5

19 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96% → 9.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential7/10

x3000.00 (3000×) → 7.0/10

Features4/10

8 features → 4.0/10

Game Mechanics3.8/10

f=8 r=5 p=20 → 3.8/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.2–40 (×200) → 6.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

Popularity0/10

synthetic proxy → 0.0/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 57 — Chance Machine 20 by Endorphina

https://slotranker.com/endorphina/chance-machine-20#score

How to cite

Slot Summary

Within Endorphina's Chance Machine line, Chance Machine 20 is the 20-payline edition of a Classic formula shared with 5, 40 and 100-line relatives. Its own emphasis stays compact: a Crown Wild expands on the middle reels, Star Scatters pay independently of lines, and a Risk/Gamble game creates an after-win choice. The published 96% RTP sits behind a familiar five-reel shape rather than a large bonus sequence.

How It Plays

Ordinary combinations pay across 20 fixed lines on a 5x3 grid. The reel sequence remains direct, with the expanding Crown providing the main alteration to line coverage.

Star Scatter symbols are evaluated outside the fixed lines and pay from any reel positions. This gives the base spin a second scoring route without opening a separate round.

Theme & Atmosphere

Chance Machine 20 uses Crown, Gems and Star motifs to present its Classic format as a polished Royal cabinet rather than a story-led game.

The restrained subject keeps attention on symbol function. Crown imagery identifies the expanding Wild, while the Stars stand apart as the Scatter symbols.

Gems Star Crown Clover Royal

Features & Win Potential

The Crown Wild is restricted to reels 2, 3 and 4. It substitutes for regular symbols and expands vertically whenever it lands.

The Risk/Gamble game follows a completed win and offers repeated attempts to double it through a card comparison, with an incorrect prediction losing the submitted amount.

Scatter Symbol 5 Reels Gamble Expanding Wilds Expanding Symbols 96% RTP 20 Paylines Risk/Gamble (Double) game

Spec sheet

Chance Machine 20 at a glance.

Identity

Slot nameChance Machine 20

StudioEndorphina

Released9/9/2020

Math

SlotRanker Score57

RTP96%

Max win3,000×

Bet range$0.20 – $40.00

Player rating4.3 / 5 · 19 votes

Format

Reels5

Paylines20

Layout5x3

Features

Themes

Expected average based on this slot's 96% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.20

Cost per session$3.20

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Chance Machine 20? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Mediumassumed — not published for this slot

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (96.00%), with wins capped at its top multiplier (3,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Chance Machine 20

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Compare Chance Machine 20 with other games

	Chance Machine 20 Score 57This game	Reel Star Score 80	Regal Spins 10 Score 65	Wild Crowns Score 65	Extra Crown Score 64
Identity
Studio	Endorphina	Relax Gaming	Pateplay	Platipus Gaming	Amusnet
Released	9/9/2020	12/12/2022	1/24/2023	6/24/2022	6/28/2023
Math
RTP	96%	96%	96.37%	95%	96.31%
Volatility	—	High volatility	Medium volatility	High volatility	Medium volatility
Max win	3,000×	8,000×	1,545×	8,859×	5,000×
Format
Reels	5	5	5	5	5
Layout	5x3	5x3	5x3	5x3	5x3
Paylines	20	15	10	20	10 (Bothway)
Min bet	0.2	0.1	0.5	1	0.1
Max bet	40	100	100	100	100
Features
Progressive	—	✓	✓	—	✓
Wild symbol	—	✓	✓	✓	✓
Free spins	—	✓	—	✓	—
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	—	✓	—
Bonus game	—	—	—	—	—
Respins	—	—	—	—	—

Every number is shown as a delta against Chance Machine 20.

Comparing against

Chance Machine 20

Endorphina

RTP

96%

Max win

3,000×

Score

+ Progressive+ Wild+ Free Spins+ Multiplier

+ Wild+ Free Spins+ Multiplier

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01Is Chance Machine 20 part of a series?

Yes. It belongs to Endorphina's Chance Machine line, which also includes editions using 5, 40 and 100 paylines, plus later Dice variants.

02What is the RTP of Chance Machine 20?

Chance Machine 20 has a listed RTP of 96%. It uses 5 reels, 3 rows and 20 fixed paylines.

03How does the expanding Crown Wild work?

The Crown Wild appears on reels 2, 3 and 4, substitutes for regular symbols and expands vertically to cover its entire reel.

04What happens in the Risk/Gamble game?

After a win, the player can enter a card comparison to try to double the amount. An incorrect choice forfeits the submitted win.

Series

Chance Machine

View all 8 games

Game	Year	RTP	Volatility	Slot Score
Chance Machine 100Endorphina	2020	96%	—	57
Chance Machine 20CurrentEndorphina	2020	96%	—	57
Chance Machine 40Endorphina	2020	96%	—	58
Chance Machine 5Endorphina	2020	96%	—	54
Chance Machine 5 DiceEndorphina	2023	96.02%	—	58
Chance Machine 20 DiceEndorphina	2024	96.01%	—	60
Chance Machine 40 DiceEndorphina	2024	96.06%	—	57
Chance Machine 100 DiceLatestEndorphina	2025	96.07%	—	57