Before you load Fill'er Up for real, spend a couple of minutes on how it genuinely performs. This is a Jackpot Software slot, sitting firmly in the a high volatility profile bracket and paying back 96.04% RTP. You get a 5-reel grid running 40 paylines, all wrapped in polished, characterful visuals. The maximum win sits at 5,000x, so there's serious upside on the table. Here's how it stacks up.
Written by James Holloway · Last updated: January 2026
Fill'er Up comes to us from Jackpot Software, built with crisp artwork and atmosphere. It runs on a 5-reel grid running 40 paylines with a high volatility profile, and an RTP of 96.04%.
Where Fill'er Up earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a solid entry in the Jackpot Software catalogue.
The RTP of 96.04% 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.
Fill'er Up 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
Fill'er Up by Jackpot Software is a solid offering that delivers good entertainment value. The 96.04% RTP combined with high volatility creates a well-balanced gaming experience.