Deus Ex is a critically acclaimed video game franchise developed by Ion Storm and published by Eidos Interactive. It is set in a dystopian future where the player takes on the role of an anti-terrorist agent. The series has spawned four main games, with a fifth installment currently in development. Deus Ex is known for its deep story and complex gameplay, which allows players to approach missions in multiple ways. The series has won numerous awards and is considered one of the most influential video game franchises of all time.