Games with Three or More Story Campaigns
Fighting game arcade modes do not count for this. Also it needs to be three or more because two is too common.
22 Games
In this game you play as eight different protagonists through nine scenarios
You can play as an alien, a predator, or a space marine.
6 story campaigns: Sonic, Tails, Knuckles, Amy, Big, Gamma. Plus an additional last story "Super Sonic"
Four main stories: Team Sonic, Team Dark, Team Rose, Team Chaotix. Plus a Last Story at the end.
Same as the other AvP games
Three main stories: Sonic, Silver and Shadow. Plus a Last Story at the end.
Five main campaigns: Gwendolyn, Cornelius, Mercedes, Oscar, and Velvet. Plus a "Last Story" for boss fights
Mostly play as one character with exception to Meta Knightmare, but of the multiple different campaigns, several like Great Cave Offensive and Milky Way Wishes have individual completion percentages and follow their own distinct rules rather than just being levels in sequence. Also considers the original game since this is just it plus more.
Six campaigns: CR-S01, Maria Torres, Gabriel Cunningham, Hank Freebird, Tomoe Tachibana, Naomi Kimishima. Plus a story at the end connecting them all.
Same as the other AvP games
Three story campaigns: Terra, Aqua, Ventus. Plus a final story at the end.
Four campaigns: Leon, Chris, Jake and Ada.
Has four campaigns
Six separate war stories: a prologue about the Harlem Hellfighters, and later stories about a British tank driver, a Royal Flying Corp pilot, an Arditi member, an ANZAC runner and a Bedouin warrior.
This probably tops the list by having thirteen story campaigns. They're less gameplay involved than the other examples but nonetheless all add a small part to a bigger picture.
Eren, Mikasa, Armin, Levi, Sasha
Has storylines for Shogo Okiie, Harry Shigima, Tetsuo Tsutsumi and Yakko Sakazaki, which all have their own story paths.
Five protagonist routes to follow you jump between across every chapter to make sure they all reach their conclusion before moving onto the next