Andrew Nicholas Oliver and Philip Edward Oliver, together known as the Oliver Twins, are British twin brothers and video game designers. They began to professionally develop computer games while they were still at school, contributing their first type-in game to a magazine in 1983. They worked with publishers Codemasters for a number of years following their first collaboration Super Robin Hood, creating the Dizzy series of games and many of Codemasters' Simulator Series games. At one point during the 1980s it was reported that 7% of all UK games sales were attributable to the Oliver Twins.