Capital Cities is an Android puzzle game developed by MSPLDevelopers. It is a free app that falls under the Education & Reference category. The game features all the countries of the world and their respective capital cities in alphabetical order. As players solve the puzzles, they will also learn about the quality of life in each city, including factors such as safety, prices, healthcare, and pollution levels.

The game also includes interesting information about the best places to live and visit around the world. According to the app, Canberra is the world's number one place for living, followed by Ottawa. London is the most visited town in the world, and Bangkok and Paris take the second and third spots respectively. The puzzles in the game are challenging and engaging, making it an excellent choice for those who love to learn while playing games.