Chain Letter

《Chain Letter》 is a grid-based control roguelite defense game.

Combine friend skills to complete your own skill build, and hold back waves of demons within a fixed grid.

Clear 4 stages and unlock 31 friend skills to form your own party—then dive into this chaotic battle!

Key Features

• Grid-based control: Thrilling combat where dodging and execution decide victory

• Addictive hands-on feel: The more you master it, the more insanely satisfying it gets

• Friend skill combos: Unlock 31 skills and craft your own build

• Short and fast runs: Optimized for repeat play with a brisk pace

• 4 stages: Tougher enemies and new patterns as you progress

Sometimes powerful foes will appear—sometimes overwhelming bullet storms will rain down.

In the chaos, you must move quickly within the grid and use your skills to hold the line.

Each “friend skill” has its own unique command, and the more you get used to the controls, the more satisfying it feels.

Gather different types of skills (summons, rapid strikes, AoE, buffs) create your own combinations, and even if you fail, try again and grow stronger.

Defeat the demons that keep surging in, all the way to the end!

Story in the Game

You play as the protagonist “Mongsil,” caught in a mysterious incident, and must escape a world that repeats for unknown reasons.

In this hellish world, a magical letter is the key element.

The letter is used to unlock friends sealed by a curse, or to strengthen skills.

Can you unlock every friend and escape this world?

Deliver the letter, unlock and upgrade your friends, and push toward the exit from hell!