The Library Overdue

“The Library Overdue” by Hacksaw is a video slot that uses a classic 5×4 grid with the Stackways™ system, which allows entire reels to be transformed into vertical stacks of identical symbols ranging from 2 to 10 elements to drastically expand winning possibilities. The theme is gothic and horror: the scene is a dark library, the setting for cursed books, animated shadows, and sinister figures lurking among the shelves. There are two free spins modes: “Stack The Shelves Spins,” which is triggered by three scatter symbols and grants 10 free spins with two chosen special symbols that expand across the entire reel; and “Overdue Spins,” which unlocks with four scatters, also offering 10 free spins, but with one significant difference: the upgrades from the Stackways Booster remain active for the entire duration of the mode. The Stackways Booster symbol can increase the minimum number of stacked symbols on each reel, up to a maximum of +10, making winning combinations more consistent as the bonus session progresses. During the free spins, stacks of expandable special symbols can cover more reels, combining with Stackways for an impressive increase in winning possibilities. The Bonus Buy feature is also available: depending on the bet value, players can directly purchase access to FeatureSpins™ that guarantee advanced features, or immediately reach the Stack The Shelves Spins or Overdue Spins modes, skipping the base game. The entire experience focuses on mechanics that build intensity as you progress, with high volatility and significant maximum win potential.

You can try it for free in demo mode or play it for real money.