Games like Classic Tower Defense 2
Games like Classic Tower Defense 2 include Age of Darkness: Final Stand, The King is Watching, Kingdom Two Crowns, Kingdom Rush - Tower Defense, and Kingdom Rush 5: Alliance TD. We matched them by the tags players give Classic Tower Defense 2 on Steam (Tower Defense, Strategy, Medieval, Fantasy, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Age of Darkness: Final Stand
Shared: Tower Defense · Strategy · Base Building

The King is Watching
Shared: Tower Defense · Strategy · Base Building

Kingdom Two Crowns
Shared: Tower Defense · Medieval · Strategy

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

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

Age of Empires II (Retired)
Shared: Strategy · Medieval · Base Building

Thronefall
Shared: Tower Defense · Strategy · Medieval

Age of Mythology: Retold
Shared: Strategy · Base Building · Singleplayer

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

Mindustry
Shared: Tower Defense · Strategy · Base Building

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

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

They Are Billions
Shared: Strategy · Tower Defense · Base Building

Diplomacy is Not an Option
Shared: Medieval · Resource Management · Base Building

Total War: WARHAMMER II
Shared: Strategy · Fantasy · Singleplayer

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

Becastled
Shared: Strategy · Medieval · Base Building

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

Creeper World 3: Arc Eternal
Shared: Tower Defense · Strategy · Indie

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

Bloons TD 6
Shared: Tower Defense · Strategy · Singleplayer

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

Dungeon Warfare
Shared: Tower Defense · Strategy · Indie

Dungeon Defenders
Shared: Tower Defense · Strategy · Singleplayer