Games like New Day: Cataclysm
Games like New Day: Cataclysm include Once Human, Dota 2, SMITE®, Ultimate Custom Night, and Infection Free Zone. We matched them by the tags players give New Day: Cataclysm on Steam (Free to Play, Action, Strategy, Indie, and Survival): closest matches first, and among equally close ones the better-known games.

Once Human
Shared: Free to Play · Action · Survival

Dota 2
Shared: Free to Play · Strategy · Action

SMITE®
Shared: Free to Play · Action · Strategy

Ultimate Custom Night
Shared: Free to Play · Strategy · Survival

Infection Free Zone
Shared: Base Building · Strategy · Post-apocalyptic

7 Days to Die
Shared: Survival · Base Building · Post-apocalyptic

Kenshi
Shared: Survival · Post-apocalyptic · Action

This War of Mine
Shared: Survival · Strategy · Base Building

Endzone - A World Apart
Shared: Strategy · Survival · Indie

Frostpunk
Shared: Strategy · Survival · Post-apocalyptic

RimWorld
Shared: Strategy · Survival · Base Building

Iron Snout
Shared: Free to Play · Action · Indie

They Are Billions
Shared: Strategy · Base Building · Survival

PUBG: BATTLEGROUNDS
Shared: Survival · Action · Strategy

Sheltered
Shared: Survival · Strategy · Base Building

Apex Legends™
Shared: Free to Play · Action · Survival

Until We Die
Shared: Strategy · Survival · Action

STALZONE
Shared: Free to Play · Post-apocalyptic · Survival

Idle Champions of the Forgotten Realms
Shared: Free to Play · Strategy · Indie

War Thunder
Shared: Free to Play · Action · Free To Play

Paladins®
Shared: Free to Play · Action · Strategy

Marvel Rivals
Shared: Free to Play · Action · Strategy

Survivalist
Shared: Survival · Action · Strategy

Infestation: The New Beginning
Shared: Action · Survival · Indie