by EndorphinaReleased Oct 7, 2025
Greek mythology meets Hold & Win in Endorphina's Sloteus Gold. 2,500x max win, four jackpot tiers, and expanding wilds that fire on every free spin.

Game Type
RTP
96.01%
Volatility
High
Max Win
2,500x
Grid
5x4
Reels
5
Rows
4
Paylines
25 Fixed Paylines
Min Bet
$0.25
Max Bet
$87.5
Hit Freq
10.87%
Endorphina built Sloteus Gold around a fictional Greek king who hoards treasure and doles out jackpots. It's a 5x4 grid with 25 fixed paylines, paying left to right. The art leans cartoonish rather than photorealistic - golden temples, laurel wreaths, a bearded Zeus-like figure presiding over the reels. Fits the Endorphina style: bright, clean, a little over-the-top.
RTP sits at 96.01%. Hit frequency is 10.87%, which means roughly one in nine spins produces something. Long dry stretches are normal here. That tracks with the high volatility rating - Endorphina gives it 5 out of 5 on their flame scale.
The game splits its bonus potential between two separate features, and they play very differently.
Land 3 scatters for 10 free spins. Four scatters give 15, five give 20. During free games, the wild expands vertically across its entire reel whenever it completes a winning combination. Wilds show up on reels 2, 3, and 4 - so in theory you get three full wild reels on a good spin. The feature retriggers too.
This is where Sloteus Gold gets aggressive. Expanding wilds on every spin means free games rarely go cold. Even short triggers at 10 spins tend to produce clusters of multi-line wins.
Six or more coin symbols on a single spin trigger the Hold & Win round. The 5x4 grid converts into 20 positions. You start with 3 attempts, and any new symbol resets the counter back to 3.
Three symbol types matter here. Coins carry multipliers from 1x to 15x your total bet. Collectors absorb the value of every coin already on the grid - and other collectors keep their own prizes too, so stacking collectors compounds fast. Mystery symbols reveal one of three fixed jackpots when the round ends: MIN at 20x, MID at 50x, or MAX at 100x.
Fill all 20 positions and you trigger the ULTRA jackpot - 1,000x your total bet. A counter above the reels tracks how many symbols you still need.
When fewer than 6 coins land during base play, there's still a random chance to activate Lucky Time. If it fires, coins start appearing across the reels until the Hold & Win threshold triggers. It's a safety net for near-misses - not guaranteed, just a chance.
Separate from the bonus game jackpots, Sloteus Gold includes Endorphina's Progressive Mystery Jackpot system with GRAND, MAJOR, and MINOR tiers. These trigger randomly regardless of what symbols land. Higher bets improve your odds. Your bet needs to fall within the eligible range - a lock icon appears next to any jackpot you can't currently win.
After any base game win, the Risk Game lets you pick one of four face-down cards against the dealer's card. Beat it and your win doubles. Tie means no change. Lose and everything goes. You get up to 10 attempts per round.
Endorphina publishes the exact RTP per dealer card value, which is unusual transparency. Against a dealer 2, your expected return is 162%. Against an Ace, it drops to 42%. The Joker beats everything and only appears in your hand, never the dealer's. Average Risk Game RTP across all dealer cards is 84%. Jackpot winnings can't be gambled.
Stakes run from €0.25 to €87.50. Max win caps at 2,500x your bet - so €218,750 at the highest stake. No buy bonus here. Endorphina calls it Bonus Pop in their system, and the localeen data includes RTP keys for it, but the feature isn't active. You trigger everything organically.
For a game with four jackpot tiers plus a 2,500x ceiling, the absence of a buy option is worth noting. Every bonus round comes through actual gameplay - 6+ coins for Hold & Win, 3+ scatters for free spins, or a Lucky Time rescue.