Games like Path of Insanity
Games like Path of Insanity include Kingdom Rush - Tower Defense, Kingdom Rush 5: Alliance TD, Company of Heroes 3, WARNO, and Total War: WARHAMMER II. We matched them by the tags players give Path of Insanity on Steam (Strategy, Action, RTS, Tower Defense, and Real Time Tactics): closest matches first, and among equally close ones the better-known games.

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

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

Company of Heroes 3
Shared: Strategy · RTS · Wargame

WARNO
Shared: Strategy · RTS · Wargame

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

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

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

Wargame: Red Dragon
Shared: Strategy · RTS · Wargame

Bad North: Jotunn Edition
Shared: Wargame · Tower Defense · Real Time Tactics

Broken Arrow
Shared: Strategy · RTS · Wargame

Creeper World 4
Shared: Tower Defense · Real Time Tactics · RTS

Men of War: Assault Squad 2
Shared: Strategy · RTS · Action

Mindustry
Shared: Tower Defense · Strategy · RTS

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

DG2: Defense Grid 2
Shared: Strategy · Action · Tower Defense

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

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

Rock of Ages
Shared: Strategy · Action · Tower Defense

Bloons TD 6
Shared: Strategy · Tower Defense · 2D

Total War: ROME REMASTERED
Shared: Strategy · Action · RTS

Bloons TD 5
Shared: Strategy · Tower Defense · Action

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

Aliens: Dark Descent
Shared: Strategy · Action · RTS

Infested Planet
Shared: Strategy · Action · Tower Defense