noun
game developer; video game company
Refers to a company or individual that creates video games. A straightforward loanword from English.
from English game maker
あのゲームメーカーは来年新しいRPGを出すらしい。
That game developer is apparently releasing a new RPG next year.
彼は大手ゲームメーカーに就職した。
He got a job at a major game company.