Behind Bars: Masterplan

Hacksaw Gaming's original version of the prison-break concept, Behind Bars: Masterplan runs on a 6x5 all-scatter grid where any 8 or more matching symbols landing anywhere trigger a win, followed by a cascade that clears the winners and drops fresh symbols into place. It's the same escape-under-pressure premise found elsewhere in the market, but this build carries its own distinct set of mechanics worth knowing before you spin.

Sitting above each reel is a Reel Multiplier that applies to any win touching that column, and the real engine of the game is how aggressively those multipliers can climb. After every cascade, one or two reels receive a multiplier boost, so a single lucky spin with several consecutive cascades can see values escalate quickly rather than needing a dedicated bonus round to build any momentum.

The bonus side of the game comes in two flavours: the Escape Plan and the Great Escape, both entered via scatter triggers. Crucially, whichever mode you land in starts every Reel Multiplier back at 1x, but from that point on the multipliers are progressive and never reset for the duration of the feature — every boost sticks. The bonus itself runs on a hold-and-win-style structure, with three spins that refresh back to three whenever a new symbol lands on the grid. Instant Win symbols carry their own values, from 0.5x up to a chunky 100x, and get multiplied by whatever the relevant reel multiplier has climbed to before adding to the total. Supporting symbols include Single and All Reels Boosters plus Adder and Epic Adder pieces worth 1x to 100x, and Multiplier and Epic Multiplier symbols worth 2x to 10x, all feeding into the same escalating pot. There's also a Search Party mechanic designed to soften the blow of a spin that comes up empty, and no Ante Bet option is available for players looking to pay extra for improved odds.

On the numbers, this version carries a 96.3% RTP and a 12,000x maximum win, with volatility rated medium and stakes running up to 75 per spin. What separates this build in practice is the depth of the hold-and-win bonus — the never-resetting progressive multipliers mean a long, cascade-heavy run through the Escape Plan or Great Escape can snowball a long way before the three spins finally run dry.

For players who enjoy hold-and-win bonus rounds with genuine escalation potential rather than a flat, capped multiplier, Hacksaw's version of Behind Bars: Masterplan is built around exactly that kind of momentum, dressed up in a suitably tense prison-block setting complete with metallic sound design underscoring every cascade.

Best approached first through the free demo at johnessyslots, where you can watch the Reel Multipliers build across a hold-and-win round without risking anything, before deciding whether to bet real stakes on breaking out with Hacksaw Gaming's original.