Look for the Spin Size display at the bottom center of the screen — minus and plus buttons sit right on either side of it for quick adjustments. 

Tap the number itself instead, and a Select Your Spin Size window opens with a full row of preset amounts plus a MAX slider on the side, in case you want to jump straight to the top.

The menu icon opens the game's settings panel. On the right edge of the screen, the circular "Hold for Turbo" icon does exactly what it says — hold it down and spins fly by faster. 

Just below it sits the auto-play icon, which lines up a run of automatic spins so you don't need to tap the spin button between rounds.

Wild
the red 7, appearing on every reel during the main game and substituting for everything except the Feature symbols.

Feature Symbols
the four Express trains (Green, Blue, Purple, and Red), appearing on all reels. They don't contribute to the main game itself — their value only counts once the Feature Game wraps up. Green lands at Mini jackpot level, Blue at Minor, Purple at Maxi, and Red Express can land any of the four jackpot tiers.

Mystery Feature Symbols
these appear during Feature Games (except the Red Express round) and turn into one of the four Jackpot symbols once the feature ends.

Coin Symbols
the classic fruit-machine set: watermelon, grapes, orange, lemon, plum, and cherries, forming the backbone of regular base-game wins

Jackpot Symbols
Mini, Minor, Maxi, and Major, each tied to a fixed multiplier of your spin size and only awarded inside a Feature Game.

High Symbols
Bell and BAR carry the strongest base-game values.

Medium Symbols
Watermelon and grapes sit comfortably in the middle.

Low Symbols
Orange, lemon, plum, and cherries round out the symbol lineup.

Land 6 Feature symbols of the same color anywhere on the grid and the Feature Game kicks off with 3 respins on the clock. 

Every new Feature or Mystery symbol that lands resets that counter back to 3, so a hot run can genuinely stretch on for a while. 

The round keeps going until the respins run dry or all 15 positions on the grid are filled — whichever comes first — and then every collected value gets totaled up for the final win.

Play Feature
Skip the wait entirely with the Feature button. Unlock the standard Feature Game directly, or go for the Super Feature Game (the Red Express, jackpot-only version) if you're specifically chasing those top-tier values.

Train Feature
During Hold and Win, every Feature symbol that lands locks into place and stays there until the round ends, at which point each one reveals its value based on which train it belongs to.

In-Game Jackpot
Four fixed levels sit behind the reels: Mini at 10x, Minor at 20x, Maxi at 50x, and Major at 150x your spin size. Fill all 15 grid positions with Feature symbols in a single round, though, and the Grand Jackpot kicks in at 1000x — the kind of moment the whole game is really built around.