Monster Town - solving the trouble of this pixelvillage app for iPhone and iPad

ALunear once was a beautiful and quiet town,people live and work in peace,happly lives. But one day,there came a group of monsters which ruined the crops and hurted the residents. The happiness of the town was on longer exist.Finally,the residents had made their efforts traping these monsters in the town centre square and have invited the best sorcerer for helping them eliminating the intruders. Sorcerer had put a group of magic traps to be ready but there is still one step left which is driving these creatures into it so that they would be back to their own planet.

That what you will do to finish this great work.
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Basic Rules:
Touching on a monster and choose a direction which appears around,make them moving into the trap which is the same color of their own.That means,if a monster ran over a trap which was not its color,the mission would be fail.
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Then who will be the last hero and successfully drive the enemy away.Let us look forward to ...