Oh? They're in chronological order? What's the order? I like to know before playing.
Leon 1 Leon 2 Leon 3 Chris 1 Chris 2 Jake 1 Jake 2 Jake 3 Jake 4 Chris 3 Chris 4 Leon 4 Jake 5 Leon 5 Chris 5
There you go. And IMO that's the best way to play it. It helps break up the action of Chris's campaign, makes up for the lack of variety in Leon's (he fights the same three or 4 enemies all campaign) and Jake's setpiece driven story is more manageable thanks to the other two campaigns focus on classic RE5 style gameplay.