Following the success of the original release, an expansion pack containing 80 additional levels was released in 1992 under the name "Humans 2: The Jurassic Levels" in the UK and "The Humans: Insult to Injury" in the United States.
В Европе оно распространялось под названием "Humans 2: The Jurassic Levels", а в США — "The Humans: Insult to Injury".