Mythos Games was a British video game developer company founded by Julian Gollop and Nick Gollop in 1988 as Target Games. It is best known for its 1994 strategy game UFO: Enemy Unknown (released in North America as X-Com: UFO Defense), which went on to become the first instalment in the later XCOM series. Following the closing of Mythos Games in 2001, the brothers founded Codo Technologies.

Reference: Wikipedia