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From Antti Kolehmainen:
MEET MARTY!Marty the Mole is the friendliest and most hardworking miner around. He loves shiny gems and works every day to find more precious jewels. You could say he is also a bit greedy. A while ago while digging for gems he came across a magical cave, where endless amounts of gems are constantly appearing. The problem is, he can't collect them all by himself! Help Marty get a mountain of gems by moving his minecart along the tracks while catching and combining gems of similar color.16 ACHIEVEMENTS, GLOBAL LEADERBOARDS, DELIGHTFUL GRAPHICS