Games like Geo Defense
Games like Geo Defense include Mini Motorways, Aliens: Dark Descent, Plants vs. Zombies GOTY Edition, Minimalist Tower Defense, and 911 Operator. We matched them by the tags players give Geo Defense on Steam (Strategy, Real Time Tactics, Roguelite, Casual, and RTS): closest matches first, and among equally close ones the better-known games.

Mini Motorways
Shared: Strategy · Casual · Minimalist

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

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

Minimalist Tower Defense
Shared: Strategy · Real Time Tactics · 2D

911 Operator
Shared: Strategy · Casual · Real Time Tactics

Mini Metro
Shared: Strategy · Casual · Minimalist

Stacklands
Shared: Roguelite · Strategy · Management

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

Door Kickers
Shared: Strategy · Top-Down · Tactical

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

Game Dev Tycoon
Shared: Strategy · Casual · 2D

Yokai Art: Night Parade of One Hundred Demons
Shared: Roguelite · Strategy · Real Time Tactics

DAVE THE DIVER
Shared: Casual · Relaxing · Management

Nodebuster
Shared: Strategy · Casual · 2D

(the) Gnorp Apologue
Shared: Strategy · Roguelite · Casual

Ratropolis
Shared: Strategy · Roguelite · 2D

A Game About Feeding A Black Hole
Shared: Strategy · Casual · Relaxing

Broken Arrow
Shared: Strategy · Real Time Tactics · RTS

Creeper World 4
Shared: Real Time Tactics · Strategy · RTS

Planet Coaster
Shared: Strategy · Relaxing · Management

Bills Must Be Paid
Shared: Roguelite · Strategy · Casual

Dune: Spice Wars
Shared: Strategy · RTS · Real Time Tactics

Tabletop Tavern
Shared: Strategy · Real Time Tactics · RTS

Stronghold: Definitive Edition
Shared: Strategy · Real Time Tactics · RTS