Endorphina

Lucky Stamps

Play Lucky Stamps slot by Endorphina for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

Only 0.1% of slots feature 3 Pots Mechanics.

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

96.08%

return to player

Volatility

High volatility

variance

Max win

3,200×

top multiplier

Min bet

$0.05

per spin

Reels

5 lines

Player rating

3.5 ★

7 votes

DEMO Play free, no signup

Endorphina

Embed on your site

3.5 / 5

7 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 96.08% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential7/10

x3200.00 (3200×) → 7.0/10

Features10/10

13 features → 10.0/10

Game Mechanics5.5/10

f=13 r=5 p=5 → 5.5/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.05–50 (×1000) → 6.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

Popularity5/10

synthetic proxy → 5.0/10

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: 76 — Lucky Stamps by Endorphina

https://slotranker.com/endorphina/lucky-stamps#score

How to cite

Spec sheet

Lucky Stamps at a glance.

Identity

Slot nameLucky Stamps

StudioEndorphina

Released9/17/2026

Math

SlotRanker Score76

RTP96.08%

VolatilityHigh volatility

Max win3,200×

Bet range$0.05 – $50.00

Player rating3.5 / 5 · 7 votes

Format

Reels5

Paylines5

Layout5x3

Features

Themes

Expected average based on this slot's 96.08% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$0.78

Cost per session$0.78

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 Lucky Stamps? 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: High

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 (High). The model is calibrated so the average return equals this slot's published RTP (96.08%), with wins capped at its top multiplier (3,200×).

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 Lucky Stamps

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Compare Lucky Stamps with other games

	Lucky Stamps Score 76This game	Lunar Rabbit Score 87	Fish Prawn Crab Bonanza Score 87	Festival 10K Ways Score 82	Oiran Dream Xmas Score 82
Identity
Studio	Endorphina	GameArt	Advant Play	ReelPlay	Win Fast
Released	9/17/2026	1/23/2023	7/29/2024	1/3/2023	11/15/2022
Math
RTP	96.08%	96.59%	97.02%	96.2%	96.34%
Volatility	High volatility	High volatility	Medium/High	High volatility	High volatility
Max win	3,200×	20,000×	20,000×	12,309×	2,300×
Format
Reels	5	7	6	6	5
Layout	5x3	7x7	6x4	6x4	5x3
Paylines	5	—	25	10000	5
Min bet	0.05	0.25	0.1	0.2	0.2
Max bet	50	100	10	1	350
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	—	✓
Scatter symbol	—	✓	✓	—	✓
Multiplier	✓	✓	✓	—	✓
Bonus game	—	—	✓	✓	✓
Respins	—	—	—	✓	✓

Every number is shown as a delta against Lucky Stamps.

Comparing against

Lucky Stamps

Endorphina

RTP

96.08%

Max win

3,200×

Score

Fish Prawn Crab Bonanza

+ Scatter+ Bonus Game

+ Bonus Game+ Respins− Free Spins− Multiplier

+ Scatter+ Bonus Game+ Respins

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