Timber Stacks

Timber Stacks takes Pragmatic Play deep into the wilderness, placing wolves, bears, cougars and other mountain wildlife across an unusual grid that can grow dramatically during a single sequence. The game begins on a 5 reel and 5 row layout with 3,125 ways to win, but its defining Increasing Grid Size mechanic can add as many as five extra rows. At full size, the grid reaches 5 reels and 10 rows with up to 100,000 ways to win. Tumbles provide repeated opportunities to expand the playing area, while Mountain Wilds assist combinations across the middle reels. With high volatility, a default RTP of 96.50 percent and maximum winnings of 10,000 times the bet, Timber Stacks concentrates almost all of its personality into watching the grid grow. Regular wins require at least 3 matching paying symbols on adjacent reels from left to right, beginning with reel 1. Card ranks occupy the lower section of the paytable, while fish, cougars, owls, bears and wolves provide the stronger combinations. The wolf is the highest paying regular symbol, awarding 1x for 3 matching symbols, 3x for 4 and 10x the total bet when it appears across all 5 reels. The Mountain Wild can appear on reels 2, 3 and 4. It substitutes for every regular paying symbol but cannot replace the Scatter. There are no Wild multipliers, expanding Wilds or sticky Wilds, so its purpose is entirely focused on completing and improving ways wins as the grid changes in size. Every successful combination activates the Tumble mechanic. Winning symbols disappear, the remaining symbols fall into the available spaces and new symbols enter from above. Another qualifying combination creates another payout and another Tumble. This continues until the refreshed grid produces no further win. The Increasing Grid Size mechanic can then activate randomly once no additional winning combination remains. An empty row is added beneath the existing grid and one reel is randomly selected to collapse into the new space. Symbols shift according to the selected reel and new symbols enter to fill the resulting gaps. The larger grid is then evaluated again, potentially creating another winning combination and restarting the Tumble process. This expansion can happen repeatedly during the same sequence. The original 5 by 5 layout can grow through 6, 7, 8 and 9 rows before eventually reaching a maximum height of 10 rows. Each additional row dramatically increases the possible winning combinations, with the fully expanded grid offering 100,000 ways to win instead of the original 3,125. Once the complete sequence ends, the grid returns to its normal 5 by 5 configuration for the next paid spin. Paw Print Scatters provide access to the Free Spins feature. Landing 4 Scatters awards 8 Free Spins, while 5 Scatters provide 10. The Scatters can appear anywhere across the grid and do not need to follow the same left to right structure used by ordinary wins. Free Spins retain the Tumble and Increasing Grid Size mechanics. The feature therefore begins on the normal 5 by 5 grid but can expand through exactly the same process as the base game. Larger configurations create more available ways, and the grid can again reach the maximum 5 by 10 layout with 100,000 ways to win. There are no additional multipliers or enhanced Wilds introduced during the bonus, keeping the expanding grid as the main source of increased potential. The documented Free Spins feature does not include a conventional retrigger mechanic, so the original allocation of 8 or 10 spins represents the complete bonus. Where available, Ante Bet increases the total wager by 25 percent and doubles the probability of triggering Free Spins naturally. The standard bonus frequency is approximately 1 in 439 spins, meaning Ante Bet reduces the theoretical frequency to approximately 1 in 219.5 spins while leaving the RTP unchanged. Where Feature Buy is permitted, direct access to Free Spins costs 120 times the total bet. The purchased trigger produces 4 or 5 Scatters, resulting in either 8 or 10 Free Spins. Timber Stacks ultimately succeeds by giving one simple mechanic enough room to develop. A regular 3,125 ways grid can gradually become a 100,000 ways layout through repeated collapses and Tumbles, creating a visually satisfying progression without relying on complicated multiplier systems. The combination of growing reels, wildlife imagery and a substantial 10,000x maximum makes it one of Pragmatic Play's more distinctive nature themed releases.

Timber Stacks takes Pragmatic Play deep into the wilderness, placing wolves, bears, cougars and other mountain wildlife across an unusual grid that can grow dramatically during a single sequence. The game begins on a 5 reel and 5 row layout with 3,125 ways to win, but its defining Increasing Grid Size mechanic can add as many as five extra rows. At full size, the grid reaches 5 reels and 10 rows with up to 100,000 ways to win. Tumbles provide repeated opportunities to expand the playing area, while Mountain Wilds assist combinations across the middle reels. With high volatility, a default RTP of 96.50 percent and maximum winnings of 10,000 times the bet, Timber Stacks concentrates almost all of its personality into watching the grid grow. Regular wins require at least 3 matching paying symbols on adjacent reels from left to right, beginning with reel 1. Card ranks occupy the lower section of the paytable, while fish, cougars, owls, bears and wolves provide the stronger combinations. The wolf is the highest paying regular symbol, awarding 1x for 3 matching symbols, 3x for 4 and 10x the total bet when it appears across all 5 reels. The Mountain Wild can appear on reels 2, 3 and 4. It substitutes for every regular paying symbol but cannot replace the Scatter. There are no Wild multipliers, expanding Wilds or sticky Wilds, so its purpose is entirely focused on completing and improving ways wins as the grid changes in size. Every successful combination activates the Tumble mechanic. Winning symbols disappear, the remaining symbols fall into the available spaces and new symbols enter from above. Another qualifying combination creates another payout and another Tumble. This continues until the refreshed grid produces no further win. The Increasing Grid Size mechanic can then activate randomly once no additional winning combination remains. An empty row is added beneath the existing grid and one reel is randomly selected to collapse into the new space. Symbols shift according to the selected reel and new symbols enter to fill the resulting gaps. The larger grid is then evaluated again, potentially creating another winning combination and restarting the Tumble process. This expansion can happen repeatedly during the same sequence. The original 5 by 5 layout can grow through 6, 7, 8 and 9 rows before eventually reaching a maximum height of 10 rows. Each additional row dramatically increases the possible winning combinations, with the fully expanded grid offering 100,000 ways to win instead of the original 3,125. Once the complete sequence ends, the grid returns to its normal 5 by 5 configuration for the next paid spin. Paw Print Scatters provide access to the Free Spins feature. Landing 4 Scatters awards 8 Free Spins, while 5 Scatters provide 10. The Scatters can appear anywhere across the grid and do not need to follow the same left to right structure used by ordinary wins. Free Spins retain the Tumble and Increasing Grid Size mechanics. The feature therefore begins on the normal 5 by 5 grid but can expand through exactly the same process as the base game. Larger configurations create more available ways, and the grid can again reach the maximum 5 by 10 layout with 100,000 ways to win. There are no additional multipliers or enhanced Wilds introduced during the bonus, keeping the expanding grid as the main source of increased potential. The documented Free Spins feature does not include a conventional retrigger mechanic, so the original allocation of 8 or 10 spins represents the complete bonus. Where available, Ante Bet increases the total wager by 25 percent and doubles the probability of triggering Free Spins naturally. The standard bonus frequency is approximately 1 in 439 spins, meaning Ante Bet reduces the theoretical frequency to approximately 1 in 219.5 spins while leaving the RTP unchanged. Where Feature Buy is permitted, direct access to Free Spins costs 120 times the total bet. The purchased trigger produces 4 or 5 Scatters, resulting in either 8 or 10 Free Spins. Timber Stacks ultimately succeeds by giving one simple mechanic enough room to develop. A regular 3,125 ways grid can gradually become a 100,000 ways layout through repeated collapses and Tumbles, creating a visually satisfying progression without relying on complicated multiplier systems. The combination of growing reels, wildlife imagery and a substantial 10,000x maximum makes it one of Pragmatic Play's more distinctive nature themed releases.