🇬🇧 UK Players 🕐 Updated daily ⚡ New slots weekly NEW
Privacy Policy Contact 18+ | Responsible Gaming
Sign In Join Free
Join Free
Endorphina · Slot Review

Argonauts — Full Review & Free Demo

3.8/5
Play for Real →
RTP
96.06%
Volatility
Average
Max Win
5,000x
Provider
Reels
5
Paylines
10
Bet Range ($,€,£)
0.01 - 40
Rating
3.8/5
Released
Sep 2023

Argonauts Slot Review

Argonauts is a Greek adventure slot from Endorphina, built on a 5x3 layout with 10 paylines and a 96.06% RTP. From a math perspective, the setup is simple in the base game, then much more event-driven once the bonus symbols land. The numbers tell you this is a high-volatility model with most upside concentrated in the Golden Fleece feature.

I see two separate payout engines here. Base wins come from a standard line model with stacked Wilds, while the real variance sits in the 6-symbol bonus trigger and its jackpot ladder. Free spins add a tighter reel strip because only top symbols, Wild, Scatter and Bonus appear. That improves symbol density, but not enough to make the game feel low-risk.

Main symbols

Wild is the highest payer overall and substitutes for every symbol except Scatter and Bonus. It appears stacked in both the main game and Free Games, and 5 Wilds pay 30x the base bet. Looking at the paytable structure, that is decent but not huge for a high-volatility slot, which tells me the bonus round carries most of the EV.

Scatter pays 25x for 3 on the screen and also triggers 8 Free Games. The top regular symbol is the warrior, worth 25x for five of a kind. Bonus symbols do not pay on lines, but 6 or more launch the Golden Fleece Bonus Game. I am not entirely sold on the base-game paytable, it looks functional rather than generous.

Symbol Payouts

icon 1
Wild
5x30
4x6
3x2
icon 2
5x25
4x5
3x1.5
icon 3
5x20
4x4
3x0.5
icon 4
5x15
4x3
3x0.5
icon 5
5x10
4x2.5
3x0.5
icon 6
5x5
4x1
3x0.5
icon 7
5x5
4x1
3x0.5
icon 8
5x5
4x1
3x0.5
icon 9
5x5
4x1
3x0.5
icon 10
Scatter
Three or more trigger 8 Free Games and 3 Scatters pay 25x the base bet.
3x25
icon 11
Bonus
icon 12
Bonus

Core Features

6 or more Bonus symbols trigger the Golden Fleece Bonus Game. During it, the main reels convert to a 5x3 grid containing three bonus symbol types: Golden Fleece, Jason's shield, and the Greek meander. Only the meander keeps the reels spinning, while the other two stay locked. Shield symbols pay fixed prizes from 1x to 16x total bet.

Golden Fleece symbols add end-of-feature jackpots worth 20x, 50x or 150x total bet. The round ends when attempts run out or all 15 positions are filled. Collecting all 15 bonus symbols awards the Extra Jackpot at 5000x total bet, and that is the headline ceiling mentioned in the available reviews. From a math perspective, this feature is a hold-style collector round with a steep top-end tail.

3 Scatters trigger 8 Free Games, and the feature can re-trigger. During free spins, only top symbols, Scatter, Wild and Bonus appear. That changes hit quality more than hit rate, because low symbols are removed from the reel set. The slot also includes a Classic Risk Game that can double winnings up to 10 times. There is no Bonus Buy.

Bonus Buy Options

Bonus Buy Golden Fleece Bonus Game
Golden Fleece Bonus Game
Triggered by 6 or more Bonus symbols. The feature uses a 5x3 grid with Golden Fleece, Jason's shield and Greek meander bonus symbols. Meander symbols keep reels spinning, shield symbols award 1x to 16x bet prizes, Golden Fleece symbols reveal jackpots of 20x, 50x or 150x at the end, and collecting 15 bonus symbols awards an Extra Jackpot of 5000x.
Bonus Buy Free Games
Free Games
Triggered by 3 Scatter symbols and starts with 8 free games. During the feature, only top symbols, Scatter, Wild and Bonus appear on the reels, and the feature can re-trigger.
Bonus Buy Risk Game
Risk Game
Classic risk feature that can double winnings up to 10 times.

RTP and volatility

96.06% RTP is right in the standard range, and volatility is marked High. With only 10 paylines and a modest top line hit of 30x for Wilds, I read the model as back-loaded. The base game can drag a bit, especially if stacked Wilds do not align on the active lines. Most meaningful returns are tied to feature access rather than line-win frequency.

Ryan Cole’s Verdict

Final verdict

Argonauts is a straightforward high-volatility slot with one clear selling point, the Golden Fleece Bonus Game. I like the clean math split between line-play, free spins and the collector-style bonus. The free spins modifier is useful, but the 6-symbol trigger is the real target because it carries the jackpot path and most of the slot's ceiling.

From a math perspective, this suits players who accept quieter base-game stretches in exchange for a shot at a 5000x event. Not everyone will enjoy that profile. If you want dense reel action on every spin, this is not the right model. If you want a simple framework with a strong bonus spike, Argonauts makes sense.
3.8
★★★★☆
out of 5
✓ Pros
Golden Fleece bonus can reach 5000x
Free spins use a tighter symbol set
Stacked wilds in base and bonus
96.06% RTP is solid
Classic Risk Game adds extra edge
✗ Cons
Only 10 paylines in base game
High volatility can stretch sessions
No Bonus Buy feature
Base game payouts look restrained
Ryan Cole
Ryan Cole
Lead Casino Slots Analyst
5+ years analysing online slots for the UK market. Every game is played for a minimum of 500 demo spins before publication. No affiliate bias — ever.
View All Reviews →
Argonauts FAQ
How is the Golden Fleece Bonus Game triggered in Argonauts?
You need 6 or more Bonus symbols anywhere on the reels. That starts the Golden Fleece feature on a 5x3 grid.
What prizes can Jason's shield and Golden Fleece symbols award?
Jason's shield symbols pay fixed amounts from 1x to 16x total bet. Golden Fleece symbols reveal jackpots at the end of the feature, worth 20x, 50x or 150x total bet.
How do the Free Games differ from the base game?
3 Scatters trigger 8 Free Games. During the feature, only top symbols, Wild, Scatter and Bonus appear, and the round can re-trigger.
What is the maximum win shown for this slot?
The top prize referenced in the source material is the Extra Jackpot at 5000x total bet. You reach it by filling all 15 positions in the Golden Fleece Bonus Game.
Does Argonauts have a Bonus Buy or only natural triggers?
The reviewed sources only mention natural triggers for Free Games and the Golden Fleece feature. I found no Bonus Buy option.