Cotai (Chinese: 路氹城) (Port. Zona do Aterro de Cotai) is a 5.2 square kilometres (2.0 sq mi) piece of newly reclaimed land on top of Seac Pai Bay between Taipa and Coloane islands in Macau, that has not yet been assigned to any of the freguesias. The Chinese and Portuguese names are a portmanteau of the two islands, Coloane and Taipa.Cotai was created to provide Macau with a new gambling and tourism area since Macau is so densely populated and land is scarce.