Games like Cube Survivor
Games like Cube Survivor include Megabonk, Hades, Vampire Survivors, Hades II, and Skul: The Hero Slayer. We matched them by the tags players give Cube Survivor on Steam (Action, Casual, Action Roguelike, Point & Click, and Roguelike): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Action Roguelike · Roguelike · Roguelite

Hades
Shared: Action Roguelike · Action · Roguelite

Vampire Survivors
Shared: Action Roguelike · Roguelite · Casual

Hades II
Shared: Action · Roguelike · Action Roguelike

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

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

Noobs Want to Live
Shared: Action · Roguelike · Action Roguelike

Sephiria
Shared: Action Roguelike · Roguelike · Roguelite

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

Risk of Rain (2013)
Shared: Action Roguelike · Action · Roguelike

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

Gunfire Reborn
Shared: Roguelike · Roguelite · Action

Crab Champions
Shared: Action Roguelike · Roguelike · 3D

Rogue Legacy
Shared: Action · Action Roguelike · Roguelike

Ravenswatch
Shared: Action Roguelike · Action · Roguelike

BALL x PIT
Shared: Action · Roguelite · Action Roguelike

Dungreed
Shared: Action Roguelike · Action · Roguelike

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Death Must Die
Shared: Action Roguelike · Roguelite · Action

Halls of Torment
Shared: Action Roguelike · Roguelite · Action

Brotato
Shared: Roguelike · Action Roguelike · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Roguelike

20 Minutes Till Dawn
Shared: Action Roguelike · Roguelite · Casual

Atomicrops
Shared: Action · Roguelike · Action Roguelike