Games like Towers Heritage
Games like Towers Heritage include Thronefall, Age of Darkness: Final Stand, Element TD 2 - Tower Defense, Kingdom Rush 5: Alliance TD, and Artisan TD. We matched them by the tags players give Towers Heritage on Steam (Strategy, Tower Defense, Old School, Fantasy, and Stylized): closest matches first, and among equally close ones the better-known games.

Thronefall
Shared: Strategy · Tower Defense · Action RTS

Age of Darkness: Final Stand
Shared: Tower Defense · Strategy · Action RTS

Element TD 2 - Tower Defense
Shared: Tower Defense · Strategy · Fantasy

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · Fantasy

Artisan TD
Shared: Strategy · Tower Defense · Building

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

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

Kingdom Rush 6: Genesis TD
Shared: Strategy · Tower Defense · Fantasy

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Building

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

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

Stronghold Crusader: Definitive Edition
Shared: Strategy · Tower Defense · Real Time Tactics

Rogue Tower
Shared: Strategy · Tower Defense · 3D

Total War: WARHAMMER III
Shared: Strategy · Fantasy · Real Time Tactics

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

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

The Scouring
Shared: PvP · Strategy · Building

Stronghold: Definitive Edition
Shared: Strategy · Building · Real Time Tactics

DG2: Defense Grid 2
Shared: Strategy · Tower Defense · Stylized

Warhammer Age of Sigmar: Realms of Ruin
Shared: Strategy · Fantasy · Action RTS

Creeper World 4
Shared: Tower Defense · Strategy · Building

Tiny Tactics
Shared: Strategy · Tower Defense · Fantasy

Emberward
Shared: Tower Defense · Strategy · 3D

Bee Island
Shared: Strategy · Tower Defense · Action RTS