Games like Guerilla Cubes
Games like Guerilla Cubes include Halo: Spartan Assault, Escape From Duckov, Deployment, Cyberhunt, and The Ascent. We matched them by the tags players give Guerilla Cubes on Steam (Top-Down Shooter, Twin Stick Shooter, PvE, Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.

Halo: Spartan Assault
Shared: Top-Down Shooter · Action · Twin Stick Shooter

Escape From Duckov
Shared: Top-Down Shooter · Adventure · Action

Deployment
Shared: Top-Down Shooter · Shooter · Twin Stick Shooter

Cyberhunt
Shared: Twin Stick Shooter · Action · Adventure

The Ascent
Shared: Top-Down Shooter · Shooter · Action

Warhammer 40,000: Space Marine 2
Shared: PvE · Action · Adventure

HELLDIVERS™ Dive Harder Edition
Shared: Top-Down Shooter · Twin Stick Shooter · Action

Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Top-Down Shooter · Action

Insect Swarm
Shared: Top-Down Shooter · Shooter · Twin Stick Shooter

HELLDIVERS™ 2
Shared: PvE · Shooter · Action

Grand Theft Auto V Legacy
Shared: Action · Shooter · Adventure

Zombieville USA 3D
Shared: Top-Down Shooter · Arcade · Shooter

From Space
Shared: Top-Down Shooter · Twin Stick Shooter · Action

12 is Better Than 6
Shared: Top-Down Shooter · Shooter · Action

SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Action · Twin Stick Shooter

Plants vs. Zombies: Battle for Neighborville™
Shared: Shooter · PvE · Casual

How to Fish
Shared: Shooter · Adventure · PvE

Tomb Raider Game of the Year
Shared: Adventure · Action · Action-Adventure

The Hong Kong Massacre
Shared: Top-Down Shooter · Action · Twin Stick Shooter

Splatter - Zombiecalypse Now
Shared: Top-Down Shooter · Action · Twin Stick Shooter

Shadowgrounds
Shared: Top-Down Shooter · Shooter · Action

SYNTHETIK 2
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter

Halo: Spartan Strike
Shared: Top-Down Shooter · Action · Shooter

RUINER
Shared: Top-Down Shooter · Action · Twin Stick Shooter