Our review of Bubble Bubble 2 cuts through the marketing and looks at what matters: how it plays and how it pays. RTG are the provider behind it, tuning the slot for a medium high-variance maths model, with 96.08% RTP. It's wrapped in a halloween and horror theme and plays out on 5 reels and 20 paylines. If everything lines up, Bubble Bubble 2 can pay up to 12,500x your bet. It first went live in 2019 and still earns its place today. But is it actually worth playing? Read on.
Written by Michael Torres · Last updated: January 2026
Bubble Bubble 2 is a game from RTG, built around a halloween and horror theme. It runs on a 5-reel grid running 20 paylines with a medium high-variance maths model, and an RTP of 96.08%.
Dig into the bonuses and Bubble Bubble 2 starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. All told, it's a solid entry in the RTG catalogue.
The RTP of 96.08% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Bubble Bubble 2 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.
3.0 / 5 — Good
Bubble Bubble 2 by RTG is a solid offering that delivers good entertainment value. The 96.08% RTP combined with medium high volatility creates a well-balanced gaming experience.