Games like Day X
Games like Day X include The Walking Dead, The Walking Dead: The Final Season, The Walking Dead: Season Two, The Walking Dead: Michonne - A Telltale Miniseries, and The Walking Dead: A New Frontier. We matched them by the tags players give Day X on Steam (Adventure, Interactive Fiction, Choose Your Own Adventure, Comic Book, and Choices Matter): closest matches first, and among equally close ones the better-known games.

The Walking Dead
Shared: Adventure · Choices Matter · Zombies

The Walking Dead: The Final Season
Shared: Adventure · Choices Matter · Choose Your Own Adventure

The Walking Dead: Season Two
Shared: Adventure · Zombies · Singleplayer

The Walking Dead: Michonne - A Telltale Miniseries
Shared: Adventure · Choices Matter · Choose Your Own Adventure

The Walking Dead: A New Frontier
Shared: Adventure · Choices Matter · Zombies

Late Shift
Shared: Choose Your Own Adventure · Choices Matter · Interactive Fiction

The Life and Suffering of Sir Brante
Shared: Interactive Fiction · Choices Matter · Choose Your Own Adventure

The Wolf Among Us
Shared: Adventure · Choose Your Own Adventure · Choices Matter

Far Away
Shared: Singleplayer · Choices Matter · Choose Your Own Adventure

Batman - The Telltale Series
Shared: Adventure · Choices Matter · Singleplayer

The Henry Stickmin Collection
Shared: Choose Your Own Adventure · Choices Matter · Singleplayer

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · Choices Matter

Until Dawn™
Shared: Adventure · Choices Matter · Choose Your Own Adventure

Road 96
Shared: Adventure · Choices Matter · Choose Your Own Adventure

Roadwarden
Shared: Adventure · Interactive Fiction · Choose Your Own Adventure

Slay the Princess — The Pristine Cut
Shared: Choices Matter · Choose Your Own Adventure · Interactive Fiction

80 Days
Shared: Adventure · Choose Your Own Adventure · Choices Matter

Reigns
Shared: Choices Matter · Choose Your Own Adventure · Adventure

Stray Gods: The Roleplaying Musical
Shared: Interactive Fiction · Choices Matter · Singleplayer

To the Moon
Shared: Adventure · Interactive Fiction · Indie

Batman: The Enemy Within - The Telltale Series
Shared: Adventure · Choices Matter · Singleplayer

Love Is All Around
Shared: Singleplayer · Interactive Fiction · Choices Matter

Dispatch
Shared: Choices Matter · Singleplayer · Choose Your Own Adventure

FAR: Lone Sails
Shared: Adventure · Singleplayer · Post-apocalyptic