Activision Blizzard's latest release lists makes no mention of the following Sierra titles: Ghostbusters: The Game, 50 Cent: Blood on the Sand, and Brutal Legend.

The company also plans to "realign" staff at High Moon Studios and Radical Entertainment, while they are considering selling or closing Massive Entertainment and Swordfish Studios.

"We are focused on improving efficiency across the combined organisation and are concentrating on businesses where we have leadership positions that are aligned with Activision Publishing's long-term corporate objectives," Activision publishing CEO Mike Griffith said in a statement.

"We have conducted a thorough review of Vivendi Games' brand portfolio and are retaining those franchises and titles that are a strong fit with our long-term product strategy. We are reviewing our options regarding those titles that we will not be publishing."

Games like Crash, Spyro, and Prototype all have solid release dates under Activision now.

"We are very excited to add such recognisable and successful brands as Crash Bandicoot, Ice Age and Spyro, which reinforce our leadership position in movie-based and family entertainment video games," added Griffith.

So what happens to our missing games?

[Activision cans Ghostbusters game]