|The cake is a pie?|
Two great examples of computer games building on other media are Bioshock as an interpretation of Ayn Rand's Atlas Shrugged and Far Cry 2 as Joseph Conrad's Heart of Darkness. Games also copy other games both digitally, such as Bejewelled clones and in analogue forms, such as these Scrabble clones. Facebook games, the combination black sheep/overachiever of the computer games family, are rife with copying accusations. It is difficult to conclude where inspiration/derivation/cumulative innovation ends and copying/cloning begins.