Games like Bunker Defense
Games like Bunker Defense include Bloons TD 6, Mindustry, The Riftbreaker, Planetary Annihilation: TITANS, and Dota 2. We matched them by the tags players give Bunker Defense on Steam (Strategy, Tower Defense, Online Co-Op, Singleplayer, and Co-op Campaign): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Mindustry
Shared: Tower Defense · Strategy · Base Building

The Riftbreaker
Shared: Online Co-Op · Tower Defense · Multiplayer

Planetary Annihilation: TITANS
Shared: Strategy · Singleplayer · Multiplayer

Dota 2
Shared: Strategy · Multiplayer · Online Co-Op

Company of Heroes 2
Shared: Strategy · Multiplayer · Singleplayer

Dungeon Defenders
Shared: Tower Defense · Online Co-Op · Strategy

Warhammer 40,000: Dawn of War - Definitive Edition
Shared: Strategy · Singleplayer · Online Co-Op

Command & Conquer™ Red Alert™ 3
Shared: Strategy · Singleplayer · Multiplayer

Bloons TD 5
Shared: Strategy · Tower Defense · Co-op

Age of Empires III: Definitive Edition
Shared: Strategy · Multiplayer · Base Building

Orcs Must Die! 3
Shared: Tower Defense · Strategy · Co-op

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

Raft
Shared: Multiplayer · Co-op · Online Co-Op

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Singleplayer

Orcs Must Die! 2
Shared: Tower Defense · Strategy · Online Co-Op

Age of Empires II (Retired)
Shared: Strategy · Multiplayer · Singleplayer

Dungeon Defenders: Awakened
Shared: Online Co-Op · Singleplayer · Tower Defense

Sid Meier’s Civilization® VI
Shared: Strategy · Singleplayer · Multiplayer

Halo Wars: Definitive Edition
Shared: Strategy · Singleplayer · Multiplayer

Company of Heroes 3
Shared: Strategy · Singleplayer · Multiplayer

Command & Conquer™ Remastered Collection
Shared: Strategy · Multiplayer · Singleplayer

Iron Harvest
Shared: Strategy · Base Building · Multiplayer

Call to Arms - Gates of Hell: Ostfront
Shared: Strategy · Singleplayer · Multiplayer