Alan Wake's American Nightmare's campaign mode lasts for around four to five hours.
Remedy's head of franchise development, Oskari Hakkinen, told Gametrailers: "The story mode is, it's kind of hard to put a time on it, but I'm guessing for the average player, [it's] something between four and five hours, maybe a little bit more depending how much you explore the optional story content."
A standalone chapter in the Alan Wake universe, the game features a new arcadey, action-oriented gameplay design, including a fresh Horde-style arcade mode called Fight 'til Dawn.
The downloadable title was previously described as being "significantly bigger than any episode of the original game." Häkkinen also says it's a perfect for XBLA.
Alan Wake's American Nightmare will be released as part of Microsoft's upcoming Xbox Live House Party season, which begins on February 15.
For more on the game, check out this Alan Wake's American Nightmare preview, which comes from the latest issues of PSM3 and Xbox World.