Games like Stardust Bulwark
Games like Stardust Bulwark include Bloons TD 6, Plants vs. Zombies GOTY Edition, Kingdom Rush - Tower Defense, Creeper World 4, and Dota Underlords. We matched them by the tags players give Stardust Bulwark on Steam (Casual, Strategy, RTS, Tower Defense, and Auto Battler): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Strategy · Tower Defense · Casual

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

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

Creeper World 4
Shared: Tower Defense · RTS · Strategy

Dota Underlords
Shared: Strategy · Casual · Auto Battler

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

Rogue Tower
Shared: Strategy · Casual · Tower Defense

Call to Arms - Gates of Hell: Ostfront
Shared: Strategy · RTS · Real Time Tactics

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

Total War: WARHAMMER II
Shared: Strategy · RTS · Real Time Tactics

Warpips
Shared: Strategy · RTS · Tower Defense

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

Broken Arrow
Shared: Strategy · RTS · Real Time Tactics

Buggos
Shared: Strategy · RTS · Auto Battler

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

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

Aliens: Dark Descent
Shared: Strategy · RTS · Real Time Tactics

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

Tower Dominion
Shared: Strategy · Tower Defense · RTS

Planetary Annihilation: TITANS
Shared: Strategy · RTS · Real Time Tactics

Defend Your Life: TD
Shared: Casual · Strategy · Tower Defense

Battlefleet Gothic: Armada 2
Shared: Strategy · RTS · Real Time Tactics

Last Train Home
Shared: Strategy · RTS · Real Time Tactics

Total War: THREE KINGDOMS
Shared: Strategy · RTS · Real Time Tactics