How we score
Slot review · Endorphina · High volatility · updated 10·05

LuckyStamps

Every source we read lists Lucky Stamps at 96.08%. High volatility, 3,200× maximum win.

The highest configuration any source lists. Endorphina, SlotCatalog list it.

7.0/10Velven rating · how it is built
3,200×Maximum win · of the stake
HighVolatility · 3x3
1Configurations listed · one found
Velven rating

7.0 out of 10, built from the figures.

  1. Return to player35% of the rating 8.5
  2. Win potential20% of the rating 4.0
  3. Risk and reward15% of the rating 0.0
  4. Feature depth20% of the rating 9.2
  5. Transparency10% of the rating 10.0

Our editorial rating for slots, computed the same way for every game from the figures on this page: the return (its top and its lowest configuration), the top win, whether that win rewards the game's volatility, the depth of its features, and how much of its data the studio publishes itself. Where a figure is not available, that part is left out rather than guessed. It rates the game, not a casino or the studio, and it is not a prediction of what you will win.

Velven analysis

What the figures say about Lucky Stamps.

3 sources

Our reading

Lucky Stamps has one published return, 96.08%, from Endorphina and confirmed by SlotCatalog. Both rate it high volatility, and both give a 3,200× maximum.

The grid is small, three reels of three with 5 paylines, and most of the value sits in three bonus games reached through tokens, which appear in the main game only. Medic Free Games starts with 8 free games and a ×1 multiplier; each bonus symbol adds games and one step to the multiplier, which has no stated maximum.

The other two rounds pay fixed amounts: Fire Pick'Em prizes run from 20× to 500×, and Crime Hold jackpots go up to 1,000×. A Risk Game allows up to 10 doublings of a win, which raises the swing further for those who use it.

Stakes run from €0.05 to €80 according to Endorphina; SlotCatalog lists €50 at the top, and we use the studio's figure. No bonus buy is listed.

Core mechanics Studio

  • Tokens in main game only
  • Three bonus games: Medic Free, Fire Pick'Em, Crime Hold

Bonus features Studio

  • Wild
  • Hold and Win
  • Pick Game
  • Pile Feature
  • Free Games
  • Jackpots
  • Progressive Multiplier
  • Risk Game

Free spins Cross-checked

Medic Free Games begin with 8 Free Games and a 1x multiplier; Bonus symbols add free games and +1 multiplier

Multipliers Cross-checked

Progressive multiplier in Medic Free Games, maximum unlimited; Risk Game up to 10 doublings; Fire Pick'Em 20x–500x; Crime Hold jackpots up to 1,000x

Special symbols Studio

Wild; Token symbols (main game only); Bonus symbols in Medic Free Games

What each source reads

2 sources, one story.

Endorphina
Endorphina read 5 Oct 2026 · 96.08% · max 3,200× 96.08%
SlotCatalog read 5 Oct 2026 · 96.08% · max 3,200× 96.08%

The studio's own page is read first. Third-party databases are research sources: we name them, and do not link to them. A studio can supply a game in more than one return configuration, and the casino chooses one. A higher figure at one source and a lower one at another usually means they read different configurations, not that one is wrong.

Session reality

What an hour of this game is expected to cost.

Expected cost per hour at 96.08% €9.80

That is the maths, not a prediction — a single session can end far above or below it.

0 minutes of expected playtime
Check it yourself

Thirty seconds, before your first spin.

01 Open the gameLoad it at the casino you play, in real-money or demo mode — the configuration is the same.
02 Open the rulesTap the menu or the "i" and choose Game Rules or the paytable. The theoretical return is printed there.
03 Find the returnLook for "RTP" or "theoretical return". 96.08% is the top configuration we have seen listed.
04 DecideThe same game with a higher return is often available at another casino. The difference compounds every hour you play.
Questions

What people ask about this game.

The sources we read list 96.08%. The return that applies to you is the one printed in the game rules at your casino.

3,200× the stake.

High. Higher volatility means longer dry runs between wins and bigger swings in a session.

Because a studio can ship several configurations and each casino chooses one. A review that quotes a single figure is quoting one configuration.

Sources

Where every figure on this page comes from.

  1. Endorphina — official game pageRead · 5 Oct 2026
  2. SlotCatalogResearch source, not linked · 5 Oct 2026
  3. Endorphina newsRead · 5 Oct 2026

Velven links only to studios, regulators and neutral sources. Databases and review sites we read for research are named here and never linked. Spotted something out of date? Tell us.

In full

The verdict.

Lucky Stamps is a high-volatility Endorphina game released in September 2026, with a 3x3 layout and a maximum win of 3,200× the stake. The sources we read list a single return for it. The figure that applies to you is the one printed in the game rules at your casino. The sources agree on the figures shown.Open the game rules before you play and check the return printed there.