While Split Fiction's co-op adventure unfolds linearly, plenty of opportunities exist to explore optional Side Stories. Although not essential to the main plot, these detours offer some of the game's most memorable moments. This guide will help you uncover them all.

Finding All Side Stories in Split Fiction

Chapters 2 through 5 each contain three Side Stories (12 total). While optional, completing them unlocks an achievement and provides unique experiences, such as transforming into pigs or participating in a deadly game show.

Chapter 2:

• Legend of the Sandfish: Appears naturally after completing the "Rush Hour" section. Unmissable.
• Farmlife: Located in the "Streets of Neon" section, after crossing a small barrier and before the elevators on the left.
• Mountain Hike: Found in "Big City Life," near the Port-A-Potties. Have Mio enter a Port-A-Potty, then use Zoe to throw her to the opposite ledge with a ladder. Have Mio drop the ladder for access.

Chapter 3:

• Train Heist: In "Lord Evergreen," on a ledge reachable via wall-running, while navigating the water with a plank.
• Gameshow: Found in "Walking Sticks of Doom," on a platform after a side-scrolling section; requires minor platforming.
• Collapsing Star: Located in "Halls of Ice," on the main path through the palace. Difficult to miss.

Chapter 4:

• Kites: At the end of the long tube in "Toxic Tumblers."
• Moon Market: In "Test Chamber," on a left-hand ledge after the crane sequence, accessible with some platforming.
• Notebook: The final Chapter 4 Side Story, in "Soaring Desperados." Located on the left-hand side of the room after obtaining the jetpack, avoiding the giant wheel.

Chapter 5:

• Slopes of War: In "Water Temple," after solving the lever puzzle to the left after crossing the golden balls.
• Space Escape: Found in "Craft Temple," after defeating the dragon. Requires launching Mio to a ledge using her glide and Zoe's roll, then having Mio drop a column for Zoe to climb.
• Birthday Cake: In "Treasure Temple," after completing the soul puzzle; located on the left.

Completing all 12 Side Stories unlocks the "Bookworms" achievement in Split Fiction.

Split Fiction is available on PS5, Xbox Series X/S, and PC.