Thunder Eagle Hold and Win Extreme 10,000 Slot by Booming Games

Four 3x5 coin grids. That's the payoff structure most of this game is pointing toward, and only one is unlocked when the bonus starts. The other three sit locked, waiting for enough value symbols to land that they tip open one at a time - 9 coins unlocks the second grid, 18 unlocks the third, 27 unlocks the fourth. Fill all 60 positions across all four and the game pays the Grand Bonus of 10,000x the bet. The overall cap sits at 12,000x, reached by combining features and multipliers that stack beyond the jackpot itself.

The base game is a calmer affair. A 5x3 reel set running 25 fixed paylines against an American Southwest backdrop - ochre sandstone buttes, dry yellow scrub, amber horizon fading to orange overhead. Premium symbols are wildlife portraits in coloured card slots: a white-headed bald eagle, a tawny cougar, a grey wolf, a jackrabbit. Royals A/K/Q/J fill the low pays. Above the reels a red banner shows three jackpot meters (Grand 10,000x, Major 100x, Mini 25x). The Wild is a gilded WILD nameplate behind a bison skull, and it substitutes for everything except the gold value coins that carry printed multipliers.

Value coins are the whole mechanic driver. They display 1x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 10x, 12x, 15x, 20x, or the Mini (25x) and Major (100x) prize values. Land 6 or more coins on a single base spin and Hold and Win Extreme triggers immediately. The Thunder Eagle Bonus runs on a separate chance: whenever value symbols appear, a bonus wheel can spin and award either the Mini, the Major, the total sum of all visible coins multiplied by 1x to 5x (All Coins), or an instant trigger of the four-grid bonus. The wheel is the shortcut, the 6-coin trigger is the grind.

Once inside Hold and Win Extreme, only value symbols appear. Three respins on the counter, reset to three whenever a new coin lands, sticky positions for anything that arrives. Completing any grid by filling all 15 positions doubles every coin value inside that grid, and the Mini and Major coins are not exempt - their fixed values also get multiplied. That's where the run can escalate quickly: a Major already worth 100x becomes 200x if its grid fills, 400x if the next respin pattern somehow re-triggers the doubling logic across adjacent grids.

No buy bonus, no ante bet. Every trigger has to come from base play or the Thunder Eagle wheel, which keeps the math honest but means feature droughts are real. The series link to Hold and Win Extreme puts it in the same family as Buffalo Hold and Win Extreme 10,000, though the Thunder Eagle template adds the Wheel of Fortune shortcut that the Buffalo entry doesn't have. That wheel is probably the single biggest reason to play this one over its series siblings.