How long is Infamous?

I was considering a rental of the game, and was wondering how long the game is, i won't be rushing the games but i doubt i'd be aiming for a full complete either.

Took me about 20 hours personally for my good play through. raven_squad

If you just bomb through the main campaign without playing the side missions and collecting blast shards you could probably finish in 10-12 hours.McMJ3

If you a good at the game and run straight through it, 12 hours. But it took me 22 because I completed every side mission because I'm nice and wanted to free Empire City from the gangs, and after you beat it, there is a lot of replay value which gives you another two dozen hours.

20 hrs if you play all the side missions and stuff.