Excavate underground treasures and match rubies, sapphires, emeralds, yellow diamonds, amethysts, and obsidian. Each gem features a sparkling, glossy effect. While the core gameplay remains the same, “Minecart Tracks” are introduced: certain grid cells are marked with rail icons. If the entire connection path lies along these rails, there is no limit on the number of turns (though the path length cannot exceed 10 cells).
Controls: Tap one gem, then tap another. Standard connections allow for a maximum of two turns; however, if both gems are located on rail tracks and the path between them consists entirely of rail tiles, any number of turns is permitted. Each level offers three rail lines that can be utilized.
The 890 levels are divided into Shallow Mines (Levels 1–300), Deep Mines (Levels 301–600), and Gem Veins (Levels 601–890). Board sizes gradually expand from 6×6 to 12×12. The objective of every level is to clear all gems; later stages introduce “Gem Clusters”—groups of four identical gems arranged in a square—which award double points when cleared.
