The idea behind “bullet screens” originated in Japan, where they were first popularized by a Japanese ACG (animation, comics, games) video portal called Nicodou, which later became the inspiration for similar Chinese ACG video sites such as Bilibili.
Source: wiktionary
The four girls are dressed up as different types of manga characters and spend more time exploring the ACG world than the human world.
Source: wiktionary
Underwurlde is definitely Ultimate’s best game yet. It has super sound and graphics, as you would expect from ACG […]
Source: wiktionary
Chris and Tim Stamper set up a game company called Ashby Computer Graphics (ACG) and began publishing games for the Sinclair Spectrum, a tiny computer that sold very well in Europe but never caught on in the United States.
Source: wiktionary