Crazy Arcade (Hangul: 크레이지 아케이드), also known as 크아, is a South Korean massive multiplayer online computer game developed by Lodumani Studio and published by Nexon. It was composed of multiple games throughout its lifetime: BnB, Tetris, Hidden Catch, Dizzy Pang, and Bz. However, the latter four games were discontinued, and now the name Crazy Arcade is often used interchangeably with BnB. The North American name, PopTag!, refers to both.
Crazy Arcade was released in 2001, featuring only BnB. Within the first few years of its launch, several other games were released as well: Tetris, Hidden Catch, Dizzy Pang, and Bz. However, all of them were eventually removed, and now the name "Crazy Arcade" ("PopTag!" in English) simply refers to BnB.
- North America: PopTag!
- Russia: BnB