From the Developer:
This mountain is rich in mystic gems. Combine gems to open up new rooms, providing new ways to dig up gems. Race against other players or race together against the clock to dig the greatest mine in this fast-paced, easy-to-learn strategy game.
Features
Leverage more than 60 room abilities
20 unique player skills adorned with dwarven poetry
Competitive, cooperative, and solitaire game modes (1-7 players)
Online and hotseat multiplayer options
True cross-platform play: iOS, Android, Windows, Mac, and Linux versions can all play together
Play a quick game and watch the action unfold, or play an asynchronous game where you only need to take one turn per day
3 levels of AI to play with or against
Faithful adaptation of the Gem Rush board game, programmed by the designer