Games like Horde: Zombie Outbreak
Games like Horde: Zombie Outbreak include ShellShock Live, Plague Inc: Evolved, Plants vs. Zombies GOTY Edition, Dead Age, and SMITE 2. We matched them by the tags players give Horde: Zombie Outbreak on Steam (Strategy, Action, Early Access, Casual, and Indie): closest matches first, and among equally close ones the better-known games.

ShellShock Live
Shared: Strategy · Action · Casual

Plague Inc: Evolved
Shared: Strategy · Indie · Casual

Plants vs. Zombies GOTY Edition
Shared: Strategy · Zombies · Casual

Dead Age
Shared: Strategy · Zombies · Casual

SMITE 2
Shared: Action · Strategy · Casual

Deadly Days
Shared: Action · Indie · Strategy

EmergeNYC
Shared: Early Access · Action · Strategy

Notes of Soul
Shared: Action · Indie · Strategy

Witch It
Shared: Casual · Action · Indie

Zombie Night Terror
Shared: Strategy · Action · Zombies

Rock 'N' Roll Defense
Shared: Strategy · Action · Casual

Plebby Quest: The Crusades
Shared: Strategy · Casual · Indie

Caster
Shared: Action · Indie · Strategy

Achievement Clicker
Shared: Casual · Strategy · Indie

Infection Free Zone
Shared: Strategy · Zombies · Action

Gensokyo Night Festival
Shared: Action · Indie · Casual

Freeman: Guerrilla Warfare
Shared: Strategy · Action · Indie

Overdungeon
Shared: Strategy · Indie · Casual

Space Pirates And Zombies 2
Shared: Strategy · Action · Indie

Town of Salem
Shared: Strategy · Indie · Casual

Dead Bits
Shared: Action · Indie · Casual

Monument Valley 2
Shared: Strategy · Casual · Action

Pixel Puzzles: UndeadZ
Shared: Casual · Strategy · Indie

Game Dev Tycoon
Shared: Strategy · Indie · Casual