The once beautiful and thriving town of Greenville is on the edge of an ecological catastrophe! The Walkers, the traveling animal family well-known to fans of the Travel Mosaic series, won’t allow the town to turn into a desert! Join the Walkers and hurry to Greenville to survey the damage. Help restore the town and save the wildlife by removing the pollution, planting vegetation, and completing well-crafted mahjong puzzles!