Behind Bars Masterplan (Bullshark Games) – Slot Review

Behind Bars Masterplan is centred on a prison escape concept, placing players within a confined, high-security environment where the objective is to build toward a calculated breakout. The theme focuses on structure, control, and the gradual progression required to overcome it.

The visual design reflects a gritty, industrial setting, with reinforced cells, steel bars, and muted tones that emphasise the harshness of the environment. Symbol choices—such as keys, batons, ID cards, and everyday prison items—support the setting, while the grid layout itself reinforces the feeling of being locked within a controlled system.

The underlying theme is one of strategy and accumulation, closely aligned with the gameplay. As values and multipliers build over time, the experience mirrors the idea of carefully executing a plan, where each step contributes toward a larger outcome.

Overall, Behind Bars Masterplan delivers a grounded and cohesive theme, combining a stark prison setting with mechanics that reflect progression, control, and the pursuit of eventual escape.

Behind Bars Masterplan is played on a 6-reel, 5-row grid using a Scatter Pays system, where wins are formed by landing 8 or more matching symbols anywhere on the screen. The game features medium volatility, a return-to-player (RTP) of 96.29%, and a maximum win potential of up to 12,000x the stake. Bets range from £0.10 to £75 per spin.

Behind Bars Masterplan Symbols & Pay Table

The game includes 16 symbols in total. Low-value symbols are represented by card ranks (J, Q, K, and A), while premium symbols include batons, toilet rolls, soap, ID cards, and keys—the highest-paying symbol, awarding up to 50x for 16 or more. Additional special symbols include Scatter symbols, Blank Cells, Instant Win symbols, Adder symbols, Multiplier symbols, and their enhanced Epic variants.

Behind Bars Masterplan Features & Mechanics

Reel Multipliers

Each of the six reels has its own multiplier displayed above it. At the start of every spin, random multiplier values are assigned, ranging from 1x up to 100x.

When a reel contributes to a winning combination, its multiplier is applied to the win. If multiple reels with multipliers above 1x are involved, their values are combined before being applied. During cascade sequences, these multipliers can increase further through random boosts, either additively or multiplicatively, allowing values to build significantly within a single spin. However, all reel multipliers reset at the start of each new base game spin. The maximum possible multiplier per reel can reach up to 24,000x.

Escape Plan Bonus

Landing 3 Scatter symbols triggers the Escape Plan bonus, a Hold and Win-style feature played on the same 6×5 grid. The bonus begins with 3 spins, and each time a new non-blank symbol appears, the spin counter resets to 3. The feature ends when no new symbols land and spins are exhausted. This feature can be purchased for 100x your chosen stake size.

Unlike traditional Hold and Win mechanics, symbols are not sticky—they activate and are removed on the following spin. During the feature, several special symbols can appear:

• Instant Win symbols reveal a value, which is multiplied by the current reel multiplier before being added to the total win.
• Single Reel Boosters (Adder and Multiplier symbols) increase the multiplier of the reel they land on.
• All Reels Boosters (Epic Adder and Epic Multiplier symbols) increase the multipliers across all reels simultaneously.

All multiplier adjustments are applied first, followed by the calculation of Instant Win values. If a spin results in no new symbols, a Search Party may randomly trigger, adding 2 to 4 Instant Win symbols to the grid and resetting the spin counter. This feature can be purchased for 250x your chosen stake size.

The Great Escape Bonus

Landing 4 Scatter symbols activates The Great Escape bonus. This enhanced version follows the same mechanics as Escape Plan but begins with three randomly selected reels already boosted with higher starting multipliers, improving the overall win potential from the outset.

Conclusion

Behind Bars Masterplan offers a well-structured experience built around its evolving reel multiplier system and Hold and Win-style bonus features. The base game provides steady engagement through cascading wins and progressive multipliers, while the real potential lies in how quickly values can scale within a single sequence.

The Escape Plan bonus delivers a dynamic twist on the traditional format, with non-sticky symbols and constant multiplier adjustments keeping each spin active and unpredictable. The enhanced Great Escape version adds stronger starting conditions, improving consistency and giving players a better chance to build momentum early. Be sure to try out this game on launch and check out our exclusive casino offers.