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Grassy Pass is a player's first 'capital' city. It is mainly Grass Terrains, Forest Terrains and Heavy Forest Terrains, but other tiles may appear. Other tiles included in this city are Lake Terrains, River Terrains, Hills Terrains, Jungle Terrains, Mountains Terrains, Caves Terrains and Volcano Terrains. A player's city in Grassy Pass is required to be at least Level 15 to unlock a Bloon Dunes City.