Golden Osiris

How to play Golden Osiris

Pragmatic Play and studio partner Reel Kingdom are extending their Big Bass franchise with Big Bass Splash Halloween 1000. It’s a Halloween-themed release scheduled for October 12, 2026.

The more telling point for slots readers isn’t the game itself. It’s what the game represents: the fourth Halloween-branded entry in a single series, which shows just how aggressively Pragmatic Play iterates on its most recognizable slot IP.

Rather than building a new title from the ground up, the release uses Big Bass Splash 1000 as its base. The franchise’s signature Money symbol collection mechanic stays intact while a seasonal skin gets swapped in.

How to play Golden Osiris

These six additions sit on top of the effects that have been running since opening day on Aug. 28, 2025: tornado winds, swirling debris, fog, haptic seats, fire bursts, falling apples, and the flying monkeys version 1.0.

This is the marquee upgrade. In 2025, it was enough for physical monkeys to appear to fly off the screen and over your head. But more than 3.6 million people have already seen that stupid pet trick. The first-gen monkeys were 16-foot helium inflatables steered by drone operators. Their only motion, besides drifting forward, was wing-flapping. They floated more than they performed.

The new monkeys are animatronic. As shown in the video, they’re capable of moving their faces and bodies in menacing ways as they pass overhead during the witch’s attack. They also seem to be hanging from an overhead line, though the Sphere has not officially described the new flight system.

How to play Golden Osiris

The release leans on a mechanic BGaming has run before rather than a new core engine. The Duel feature triggers when a VS symbol lands on the game’s 5×5 grid along with a win. At that point the symbol expands as a whole-reel Wild, and an animated showdown plays out, with the winner showing a multiplier of up to ×100.

That familiarity is the point. BGaming explained that the game has been inspired by the success of other games featuring the Duel mechanic. In other words, the studio is iterating on a framework it already trusts and attaching its most recognizable characters to it.

The commercial profile stays within conventional bounds. The game serves up a maximum win of ×5,000, with a 97% RTP and medium-high volatility. A layered Buy Bonus menu sits on top of the base engine, offering variations of the Free Spins round rather than a separate headline mechanic.