Saints Row 2

This looks like a clone of GTA San Andreas and in many way it is but I like the story and the mood in this game much more. You can also play this game in co-op with two players.

Saints Row: The Third

Action game where the Third Streets Saints gang once again make the world less safe. The world in this case is the city of Steelport and there are gangs to fight, crazy missions and tanks to skydive with :).

Saints Row IV

More madness with the superpowers, aliens and a dubstep gun. The superpowers work well but there is not much use for cool cars anymore when you can jump over buildings.