Welcome to our deep dive on Power Balls — the demo, the maths, and whether it earns a spot in your rotation. Built by Endorphina, it lands as a release with a high-variance maths model and 96.12% RTP. It first went live in 2025 and still earns its place today. Visually it's dressed up with a pig theme, with the action running on a straightforward 6 reels layout. If everything lines up, Power Balls can pay up to 3,000x your bet. Here's how it stacks up.
Written by James Holloway · Last updated: January 2026
Power Balls comes to us from Endorphina, wrapped in a pig theme and powered by a straightforward 6 reels layout. The result is high variance paired with 96.12% RTP.
The mechanics are what make Power Balls interesting. Prefer to skip the wait? A bonus buy option lets you jump straight into the feature for a set multiple of your stake. Tumbling reels clear winning symbols so fresh ones can drop in, chaining wins from a single spin. Look out for scatter symbols that unlock free spins and extra bonus rounds. The high volatility means patience is rewarded — expect quiet spells broken by bigger hits. On balance, Power Balls is a dependable option worth a few spins in the demo first.
The RTP of 96.12% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Power Balls features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
When you land a winning combination, the winning symbols are removed and new symbols cascade down to fill the gaps. This can create chain reactions of multiple wins from a single spin. The tumbling mechanic continues as long as new winning combinations are formed.
Don't want to wait for the bonus to trigger naturally? Power Balls offers a Bonus Buy feature that lets you purchase direct access to the bonus round for a set multiple of your bet. This is perfect for players who want to jump straight into the action and experience the slot's best features immediately.
3.3 / 5 — Good
Power Balls by Endorphina is a solid offering that delivers good entertainment value. The 96.12% RTP combined with high volatility creates a well-balanced gaming experience.