At this point, Lévy replaced René Penisson as chairman of Activision Blizzard.[3] While Blizzard retained its autonomy and corporate leadership in the merger, other Vivendi Games divisions such as Sierra ceased operation.[20] With the merger, Kotick was quoted stating if a Sierra product did not meet Activision's requirements, they "won't likely be retained."[20] Some of these games ultimately were published by other studios, including Ghostbusters: The Video Game, Brütal Legend, The Chronicles of Riddick: Assault on Dark Athena, and 50 Cent: Blood on the Sand.[21] However, a number of Sierra's games such as Crash Bandicoot, Spyro the Dragon, and Prototype were retained and are now published by Activision.[22][23]