Pearl Harbor Slot is the perfect game for anyone who wants to join the battle on the Japanese side and experience the infamous attack. This game has a 7x7 cluster pays grid, and you need at least 5 matching symbols in a cluster (vertical or horizontal) within the active game area to win. The default active area is a 3x3 square, but it can expand depending on the symbols that land on the reels. Here are the features and mechanics of the Pearl Harbor Slot game:

Features:
- 7x7 cluster pays grid
- Cascading mechanic
- xBomb Wild Multiplier feature
- Colossal Symbols
- Scatter symbols that multiply when split
- Dogfight Bonus Round
- Tora! Tora! Tora! Bonus Round
- Bonus Buy menu

Mechanics:
- Winning symbols are removed via the Cascading mechanic, and new symbols drop down to fill the gaps. This repeats as long as you keep winning.
- The xBet Banzai feature can be activated if you wish, and it will cost you 50% more per spin. This feature guarantees a scatter in the active game area per spin, which triples your Dogfight bonus round chances. You can also pay 100% more per spin to get 2 guaranteed scatters, and this more than 10x your Tora! Tora! Tora! bonus round chances.
- The xBomb Wild Multiplier feature triggers when bombs appear in the active area. It blows away up to 10 symbols in the surrounding area, which increases the active game area accordingly. Split xBombs Wilds get an x2 multiplier which doubles per split after that. Each exploding xBomb also adds +1 to the global win multiplier, or it adds the number it has been split into.
- The Target symbol expands the active game area to make sure it's included, and the symbol turns into a wild when part of the active grid.
- The katana blade xSplit symbol splits all symbols in the direction of the blade's handle, and the splitting happens in the active area at the end of the cascade. The xSplit symbol comes with 1 or 2 blades, and it can be split to get an additional blade up to 4, at best. It then gets an x2 multiplier if split, and the multiplier is added to all symbols it splits. Consecutive splits double multiplier values, and the xSplit turns into a multiplier wild equal to the number of swords it had when finished splitting.
- Colossal Symbols up to size 3x3 can expand the active area to get them fully in view. These larger symbols count as one symbol in a cluster win, and a 3x3 symbol will split into 3, 9, and 18 1x1-sized symbols from 1, 2, and 3 splits, respectively. A 4th split adds an x2 multiplier to the split symbols, or multiplies them by x2. Similar things happen with the 2x2-sized colossal symbol.
- Scatter symbols only count if they appear in the active game area, and they can also be split to help trigger the bonus rounds. If split, the scatters multiplier value turns into an x-Multiplier if the bonus round is triggered.

Bonus Rounds:
- The Dogfight Bonus Round triggers from 3 scatters in view, and the feature puts you in the cockpit of a Japanese WW2 aircraft. You start with 3 free spins, and the dials spin to land you x-multipliers, +multipliers, or blanks. The free spins tally resets each time you land a multiplier of any kind, and +multipliers are added together before being boosted by the x-multiplier (if present). X-multipliers remain active until you land at least one +multiplier that it can boost, and x-multipliers are turned into +multipliers if any are left as the feature ends. Fill up a column of dials to trigger the Dogfight Attack, and land a larger prize if you manage to take out the enemy plane. If all 18 dials contain values, you get a Kamikaze Attack after any Dogfight. This basically generates a multiplier that boosts your total bonus round win if the ship is hit.
- The Tora! Tora! Tora! Bonus Round is the top-tier bonus round that you can purchase from the Bonus Buy menu. This feature has an RTP of 96.33% and costs 712x the stake. The feature also triggers from 3 scatters, and it puts you in the middle of the infamous attack on Pearl Harbor. You start with 12 free spins, and the bombs drop to the reel sets below on every spin. Each bomb has a random x2 to x100 multiplier attached, and it's possible to land multiple bombs on the same spin. These multipliers are then applied to the win amounts on the connected reels below, which can lead to massive payouts. The feature guarantees at least 3 scatters, which means that you can trigger the Dogfight Bonus Round as well.

Bonus Buy Menu:
- The Bonus Buy menu allows you to purchase the Dogfight or Tora! Tora! Tora! Bonus Round, depending on your preference.
- The Dogfight Bonus Round costs 60x the stake (RTP of 96.24%), and the Tora! Tora! Tora! Bonus Round costs 712x the stake (RTP of 96.33%). The random option costs 73x, and it gives you a 1 in 50 chance of the top-tier bonus round (RTP of 96.25%).
- The Bonus Buy option is not available in some jurisdictions (such as the UK). In these cases, the bonus rounds can only be triggered organically.

In conclusion, Pearl Harbor Slot is an action-packed game with excellent graphics and features. With its massive potential of 41,127x and two bonus rounds, this game is sure to keep you entertained for hours. The features and mechanics are easy to understand and follow, making it accessible for both novice and seasoned players alike.