World of Tanks is a massively multiplayer online game developed by Belarusian company Wargaming, featuring mid-20th century 1930s–1960s era combat vehicles. It is built upon a freemium business model where the game is free-to-play, but participants also have the option of paying a fee for use of "premium" features. The focus is on player vs. player gameplay with each player controlling an armored vehicle.