Games like Childhood's RUSH
Games like Childhood's RUSH include Hades, Megabonk, Vampire Survivors, Risk of Rain 2, and Skul: The Hero Slayer. We matched them by the tags players give Childhood's RUSH on Steam (Action Roguelike, Action, Roguelite, Shooter, and Indie): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Roguelite · Action

Megabonk
Shared: Action Roguelike · Roguelite · Indie

Vampire Survivors
Shared: Action Roguelike · Roguelite · Indie

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

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

EVERSPACE™
Shared: Action Roguelike · Action · Indie

Roboquest
Shared: Action Roguelike · Roguelite · Shooter

Hades II
Shared: Action · Roguelite · Action Roguelike

Gunfire Reborn
Shared: Roguelite · Action · Action Roguelike

SYNTHETIK: Legion Rising
Shared: Roguelite · Action · Action Roguelike

Rogue Legacy
Shared: Action Roguelike · Action · Indie

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Action

Nuclear Throne
Shared: Action Roguelike · Indie · Action

KovaaK's
Shared: Action · Shooter · Indie

SULFUR
Shared: Action Roguelike · Roguelite · Shooter

Touhou Dystopian
Shared: Action Roguelike · Action · Roguelite

COMPOUND
Shared: Action · Roguelite · Indie

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third Person

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

UnderMine
Shared: Action Roguelike · Roguelite · Action

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Singleplayer

Dungreed
Shared: Action Roguelike · Roguelite · Action

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

Bright Memory: Infinite
Shared: Action · Indie · Shooter