"All your base are belong to us" is an Internet meme based on a poorly translated phrase from the opening cutscene of the Japanese video game Zero Wing. The phrase first appeared on the European release of the 1991 Sega Mega Drive, also known as the Sega Genesis, port of the 1989 Japanese arcade game.

An Internet meme, or simply meme, is a cultural item that is spread via the Internet, often through social media platforms. Internet memes can take various forms, such as images, videos, GIFs, and various other viral sensations. Characteristics of memes include their susceptibility to parody, their use of intertextuality, their propagation in a viral pattern, and their evolution over time. The name is from the concept of memes proposed by Richard Dawkins in 1972.