Mole Digger 2, a game from the provider Play’n GO, is a slot featuring 5 reels, 4 rows, and 25 fixed paylines. Winning combinations are formed from left to right on adjacent reels, starting from the leftmost reel. Only the highest win is paid out for each selected payline.

The Grand (1000x), Major (100x), Minor (50x), and Mini (30x) values are doubled! These values are calculated based on the base bet.
You could land either a red-green-blue gemstone or a pink-turquoise gemstone!
In the base game, Wild symbols can appear on all reels. They substitute for all symbols, except for the gemstones.
During any spin, one or more mine carts may appear beneath the reels. All cash values located on the reel above a mine cart will be collected.

Various types of gemstones can appear on the reels. Landing at least 6 gems of the same color triggers the Hold’n Win feature. The Hold’n Win feature is also triggered if at least one “Burst Gem” appears. If the Hold’n Win feature is not activated, but red, pink, turquoise, green, or blue gems are present on the reels, they are collected into their respective meters, which offers a chance to trigger Hold’n Win. The appearance and animations of the meters located above the reels are purely visual elements; they have no impact on the generation of random outcomes or the probabilities within the game.
In the base game, every yellow gem collected by the mine cart awards a random prize of 1x, 2x, 3x, 4x, 5x, 7x, 8x, or 10x the total bet. In Hold’n Win mode, each yellow gem awards a random prize of 1x, 2x, 3x, 4x, 5x, 7x, 8x, 10x, or 12x the total bet, and may also award one of the jackpots: Mini (15x), Minor (25x), Major (50x), or Grand (500x) the total bet.
In Hold’n Win mode, the red gemstone awards a random bonus: a multiplier of the total bet – 10x, 12x, Mini (15x), Minor (25x), Major (50x), or Grand (500x).
The Pink Gem triggers a bonus: 2-3 Yellow Gems appear on the reels, each carrying a random multiplier – 5x, 7x, 8x, 10x, or 12x the total bet (in Hold’n Win mode). The Pink Gem sums up the values of these new gems and assigns the resulting total to itself. If only one empty space remains on the reels, a single Yellow Gem is added, and the Pink Gem adopts its value. If the Pink Gem happens to be the final symbol to land on the reels, it is assigned a random value – 5x, 7x, 8x, 10x, or 12x the total bet.
The turquoise gem provides a bonus: it copies the highest value among all the gems on the reels and assigns that value to itself.
The Green Gem provides a bonus that increases all cash values by a random multiplier – 1, 2, 3, 4, 5, 7, or 10 times the total bet – within the Hold’n Win feature.
The “Blue Gem” provides a bonus that collects all cash values present on the screen during the Hold’n Win mode.
A multicolored, unique gemstone (Special Gem) that triggers the Hold’n Win feature when it appears. In the Hold’n Win mode activated this way, all the enhancements associated with the individual gemstones that combined to form this “Burst Gem” will be in effect.

The feature begins with 3 re-spins; landing any “Gem” symbol resets the spin counter. Special “Gem” symbols are awarded before the Hold’n Win re-spins commence. Cash Pots are bonuses that can only be won during the Hold’n Win feature. Fill all the reels to claim the top prize – the Grand Cash Pot. The available Cash Pot levels are: Mini (15x), Minor (25x), Major (50x), and Grand (500x). The values of these prizes are multiplied by the total base bet.