Games like Forest Of Siege
Games like Forest Of Siege include Kingdom Rush - Tower Defense, Kingdom Rush Vengeance - Tower Defense, Plants vs. Zombies GOTY Edition, Kingdom Rush 5: Alliance TD, and Bloons TD 6. We matched them by the tags players give Forest Of Siege on Steam (Action, Tower Defense, 2D, Base Building, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Kingdom Rush - Tower Defense
Shared: Tower Defense · 2D · Singleplayer

Kingdom Rush Vengeance - Tower Defense
Shared: Tower Defense · 2D · Singleplayer

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

Kingdom Rush 5: Alliance TD
Shared: Tower Defense · 2D · Strategy

Bloons TD 6
Shared: Tower Defense · Singleplayer · Strategy

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · 2D · Singleplayer

Kingdom Rush 6: Genesis TD
Shared: Tower Defense · Action · 2D

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · 2D · Singleplayer

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

Cult of the Lamb
Shared: Base Building · Singleplayer · 2D

Bloons TD 5
Shared: Tower Defense · Action · Strategy

Mindustry
Shared: Tower Defense · Base Building · Strategy

Thronefall
Shared: Tower Defense · Action · Strategy

Kingdom Two Crowns
Shared: Tower Defense · Base Building · Singleplayer

GemCraft - Chasing Shadows
Shared: Tower Defense · Action · Singleplayer

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

Until We Die
Shared: Base Building · Tower Defense · Action

The Escapists
Shared: 2D · Singleplayer · Strategy

The Riftbreaker
Shared: Base Building · Tower Defense · Action

Taur
Shared: Tower Defense · Action · Base Building

Oxygen Not Included
Shared: Base Building · Singleplayer · 2D

Tangy TD
Shared: Tower Defense · Action · Singleplayer

Forts
Shared: Base Building · Strategy · 2D

God of War
Shared: Action · Singleplayer · Adventure