Games like One Day
Games like One Day include Warframe, Warhammer 40,000: Space Marine 2, Marvel Rivals, GrandChase, and The First Descendant. We matched them by the tags players give One Day on Steam (Spelling, Third-Person Shooter, Action, Casual, and Perma Death): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Third-Person Shooter · Action · Action RPG

Warhammer 40,000: Space Marine 2
Shared: Action · Third-Person Shooter · PvE

Marvel Rivals
Shared: Third-Person Shooter · Action · Free to Play

GrandChase
Shared: Action · PvE · Casual

The First Descendant
Shared: Third-Person Shooter · Action · Free to Play

HELLDIVERS™ 2
Shared: Third-Person Shooter · PvE · Action

Black Myth: Wukong
Shared: Action · Action RPG · 3D

Orcs Must Die! 3
Shared: Third-Person Shooter · Action · PvE

World of Warships
Shared: Third-Person Shooter · Free to Play · 3D

MONSTER HUNTER RISE
Shared: Action · Action RPG · PvE

Aimlabs
Shared: Action · Third-Person Shooter · Free to Play

Blue Protocol: Star Resonance
Shared: Action · Action RPG · Free to Play

ARC Raiders
Shared: Third-Person Shooter · PvE · Third Person

Terminull Brigade™
Shared: Third-Person Shooter · PvE · Action

The Callisto Protocol™
Shared: Third-Person Shooter · Action · PvE

ATLYSS
Shared: Action RPG · Action · 3D

SWORD ART ONLINE Fractured Daydream
Shared: Action · Casual · Action RPG

Grand Theft Auto V Legacy
Shared: Action · Third-Person Shooter · Third Person

Dinoblade
Shared: Action · Action RPG · 3D

Predecessor
Shared: Action · Third Person · PvE

PUBG: BATTLEGROUNDS
Shared: Third-Person Shooter · Action · Survival

Rogue Company
Shared: Third-Person Shooter · Action · Free to Play

Voidling Bound
Shared: Third-Person Shooter · Action · PvE

Strinova
Shared: Third-Person Shooter · Free to Play · Action