Games like Blade vs Undead
Games like Blade vs Undead include Plants vs. Zombies GOTY Edition, Bloons TD 6, Plague Inc: Evolved, Rock 'N' Roll Defense, and Dead Age. We matched them by the tags players give Blade vs Undead on Steam (Casual, Strategy, Tower Defense, Top-Down Shooter, and 3D): closest matches first, and among equally close ones the better-known games.

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

Bloons TD 6
Shared: Strategy · Tower Defense · Casual

Plague Inc: Evolved
Shared: Strategy · Casual · Zombies

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

Dead Age
Shared: Strategy · Casual · Zombies

Rogue Tower
Shared: Strategy · Tower Defense · Casual

Orcs Must Die! 3
Shared: Tower Defense · Strategy · Third Person

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · Casual

Plants vs. Zombies™: Replanted
Shared: Tower Defense · Casual · Zombies

Orcs Must Die! 2
Shared: Tower Defense · Strategy · Third Person

Apocalypse Party
Shared: Casual · Top-Down Shooter · Top-Down

SMITE 2
Shared: Strategy · Casual · Third Person

Minimalist Tower Defense
Shared: Strategy · Tower Defense · Top-Down

Yet Another Zombie Survivors
Shared: Top-Down Shooter · Zombies · Top-Down

Cluckmech Oasis
Shared: Strategy · Tower Defense · Top-Down Shooter

Creeper World 4
Shared: Tower Defense · Strategy · 3D

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · Casual

Ultimate Zombie Defense
Shared: Casual · Tower Defense · Top-Down Shooter

Dead Age 2: The Zombie Survival RPG
Shared: Strategy · Casual · Zombies

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · Tower Defense · Casual

They Are Billions
Shared: Strategy · Tower Defense · Zombies

Organ Trail: Director's Cut
Shared: Strategy · Zombies · Retro

Necrosmith
Shared: Tower Defense · Strategy · Zombies

Drifter Star: Evolution
Shared: Casual · Strategy · Indie