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"GemCraft is an interesting tower defence title that has been played online more than 90 million times.

Your aim in this title is pretty much the same as it is in every other tower defence title: build defensive obelisks and prevent waves of invading monsters from reaching your base (a mana crystal, on this occasion).

In GemCraft, you do this using eight magical jewels that all have special abilities. You can combine these gems and craft new multi-coloured crystals that boast even more potent powers.

This mobile version of the game features a touchscreen-friendly interface, Retina display-compatible graphics, and 32 levels that have been designed especially for your phone or tablet. There are also Game Center-powered leaderboards and achievements on board."

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