Complex sentence: Rare, Ltd. (formerly known as Rareware) is a British video game development company founded in 1982 by brothers Tim and Chris Stamper as Ashby Computers and Graphics Ltd. (ACG).
Split into simpler sentences: Rare, Ltd. (formerly known as Rareware) is a British video game development company. It was founded in 1982 by brothers Tim and Chris Stamper as Ashby Computers and Graphics Ltd. (ACG).