Hot Gems Xtreme

Hot Gems Xtreme is a video slot from Playtech that focuses on the theme of gemstone mining. In this game, you spin on six reels, surrounded by elements such as gemstones, mine carts, pickaxes, and lanterns, all set in a mine from the Old West. The game utilizes a Ways-Boost system, starting with 6×4 reels that offer 4,096 ways to win. Winning combinations activate the Growing Reels feature, which adds extra rows up to a maximum of 8 rows, potentially increasing the number of ways to win to as much as 262,144. There are special TNT symbols that explode and remove adjacent standard symbols while turning into wilds and adding extra rows for more payouts. Additionally, there are Walking Mystery Symbols that move to adjacent positions and turn the symbols they pass into mystery symbols. These mystery symbols then transform into the same standard symbol from reel 1, which can help increase winnings. Regular "Big Symbols" also appear in sizes of 2×2 and 3×3, which drop down and remove the standard symbols below. The game features a Free Spins bonus round that is triggered by landing 3 or more scatter or bonus symbols on the reels. During the Free Spins, the extra rows gained through Growing Reels remain locked, so the number of ways to win does not revert to the base grid height on non-winning spins. Most special features are active in both the base game and the free spins round. Under favorable conditions, the maximum win can reach up to 10,000× your bet.

You can play it for real money.