Games like HexeD
Games like HexeD include Bloons TD 6, Orcs Must Die! 3, Thronefall, Plants vs. Zombies GOTY Edition, and Rogue Tower. We matched them by the tags players give HexeD on Steam (Strategy, Tower Defense, PvE, Arcade, and Action): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Strategy · Tower Defense · 3D

Orcs Must Die! 3
Shared: Tower Defense · Strategy · PvE

Thronefall
Shared: Strategy · Tower Defense · Action

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

Rogue Tower
Shared: Strategy · Tower Defense · 3D

Legion TD 2 - Multiplayer Tower Defense
Shared: Tower Defense · Strategy · PvP

Bloons TD 5
Shared: Strategy · Tower Defense · Action

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

Cluckmech Oasis
Shared: Strategy · Tower Defense · Cute

The WereCleaner
Shared: Strategy · Arcade · Casual

Totally Accurate Battle Simulator
Shared: Strategy · Funny · PvP

Orcs Must Die!
Shared: Tower Defense · Strategy · Action

Plants vs. Zombies: Battle for Neighborville™
Shared: PvE · Tower Defense · Action

Topple Tactics
Shared: Tower Defense · Strategy · PvP

Rock of Ages
Shared: Strategy · Tower Defense · Action

Predecessor
Shared: PvE · Action · PvP

Bee Island
Shared: Strategy · Tower Defense · Action

Liars Bar
Shared: PvP · Casual · 3D

Party Animals
Shared: Cute · PvP · Casual

Orcs Must Die! 2
Shared: Tower Defense · Strategy · Action

Age of Darkness: Final Stand
Shared: Tower Defense · Strategy · PvE

GrandChase
Shared: PvE · PvP · Action

Zuma Deluxe
Shared: Strategy · Arcade · Cute

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