One by One

One by One is a roguelike shooter about saving the world from phobias. You explore dungeons, fight creatures and collect artifacts from the past, present and future. You can customize your loadout with weapons, activatable equipment and accessories, and choose from characters with different play styles.

Explore the dungeons

The dungeons include dark crystal caverns, primal fiery forests and autonomous robot facilities. Dynamic encounters begin within the first minutes of gameplay. You can rescue adventures and open treasure chests to find weapons, equipment, accessories and companions. Combining items can give you powerful effects.

Combat and collection

A soul companion targets weakened enemies, and weapons reload while unequipped. The bestiary lets you domesticate monsters you have encountered. The game also features all-devouring forest fires, frogs and Swoaf, a mysterious god who looks like a swan, is made of a loaf of bread and dispenses healthy slices of bread.

Modes and unlocks

Hardmode and permadeath offer extra challenge and rewards. You can unlock forbidden equipment, playable characters and rare achievements, or challenge friends in speedrun mode.