Games like Cubic Survivor
Games like Cubic Survivor include Crab Champions, Megabonk, Vampire Survivors, Risk of Rain 2, and Zombieville USA 3D. We matched them by the tags players give Cubic Survivor on Steam (Action Roguelike, PvE, Shooter, Arcade, and Roguelike): closest matches first, and among equally close ones the better-known games.

Crab Champions
Shared: Action Roguelike · Roguelike · Arcade

Megabonk
Shared: Action Roguelike · Roguelike · Arcade

Vampire Survivors
Shared: Action Roguelike · Roguelike · Arcade

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Shooter

Zombieville USA 3D
Shared: Arcade · Action Roguelike · Shooter

Hades
Shared: Action Roguelike · Roguelike · Indie

HELLDIVERS™ 2
Shared: PvE · Shooter · Action

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Indie

SULFUR
Shared: Action Roguelike · Shooter · Gun Customization

Deadzone: Rogue
Shared: PvE · Roguelike · Shooter

Hades II
Shared: Roguelike · Action Roguelike · Action

LORT
Shared: Action Roguelike · PvE · Roguelike

Brotato
Shared: Action Roguelike · Roguelike · Singleplayer

Risk of Rain Returns
Shared: Action Roguelike · PvE · Roguelike

ELDEN RING NIGHTREIGN
Shared: Roguelike · PvE · Third Person

SYNTHETIK 2
Shared: Action Roguelike · Shooter · Character Customization

Wedding Witch
Shared: Action Roguelike · Roguelike · Casual

Terminull Brigade™
Shared: PvE · Action Roguelike · Shooter

Rogue: Genesia
Shared: Action Roguelike · Arcade · PvE

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Indie

BALL x PIT
Shared: Arcade · Action Roguelike · Roguelike

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelike · Action

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Indie

Nuclear Throne
Shared: Action Roguelike · Roguelike · Shooter