Games like Minion Slayer
Games like Minion Slayer include Age of Darkness: Final Stand, Bloons TD 6, Kingdom Rush 5: Alliance TD, Kingdom Rush 6: Genesis TD, and Kingdom Rush - Tower Defense. We matched them by the tags players give Minion Slayer on Steam (Strategy, Tower Defense, RTS, Action RTS, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

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

Bloons TD 6
Shared: Strategy · Tower Defense · Cartoony

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

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

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

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · 2D

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

Mindustry
Shared: Tower Defense · Strategy · RTS

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

Thronefall
Shared: Strategy · Tower Defense · Action RTS

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

The King is Watching
Shared: Tower Defense · RTS · Strategy

They Are Billions
Shared: Strategy · RTS · Tower Defense

Grim Nights
Shared: Strategy · Tower Defense · RTS

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

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

GemCraft - Frostborn Wrath
Shared: Tower Defense · Strategy · RTS

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

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Fantasy

Lessaria: Fantasy Kingdom Sim
Shared: Strategy · RTS · Tower Defense

Rusted Warfare - RTS
Shared: Strategy · RTS · 2D

Relic Guardian - Tower Defense
Shared: Strategy · Tower Defense · 2D

From Glory To Goo
Shared: Strategy · Tower Defense · RTS

Warhammer 40,000: Dawn of War - Definitive Edition
Shared: Strategy · RTS · Action RTS