Games like Circuit Thunder®
Games like Circuit Thunder® include Rogue Legacy 2, Dust: An Elysian Tail, Bloodstained: Ritual of the Night, BioShock Infinite, and Ori and the Will of the Wisps. We matched them by the tags players give Circuit Thunder® on Steam (Action, Adventure, RPG, 2D Fighter, and Arcade): closest matches first, and among equally close ones the better-known games.

Rogue Legacy 2
Shared: Action · Arcade · Platformer

Dust: An Elysian Tail
Shared: Action · RPG · Adventure

Bloodstained: Ritual of the Night
Shared: Action · RPG · Adventure

BioShock Infinite
Shared: Action · Shooter · RPG

Ori and the Will of the Wisps
Shared: Action · Platformer · Adventure

SANABI
Shared: Action · Adventure · 2D Platformer

F.I.S.T.: Forged In Shadow Torch
Shared: Action · Adventure · Platformer

Brawlhalla
Shared: 2D Fighter · 2D Platformer · Action

Hollow Knight
Shared: Platformer · Metroidvania · Adventure

Trine 5: A Clockwork Conspiracy
Shared: Action · Adventure · RPG

Fallout 4
Shared: RPG · Adventure · Action

Castlevania: Belmont's Curse
Shared: Action · RPG · Platformer

UnEpic
Shared: RPG · Action · Platformer

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

Rogue Legacy
Shared: Action · Platformer · RPG

Street Fighter™ 6
Shared: 2D Fighter · Action · Arcade

Dead Cells
Shared: Adventure · Metroidvania · Action

Remnant: From the Ashes
Shared: Action · RPG · Adventure

The Vagrant
Shared: Action · RPG · Adventure

South Park™: The Stick of Truth™
Shared: RPG · Adventure · Action

ICEY
Shared: Action · Adventure · RPG

Eastern Exorcist
Shared: Action · RPG · Adventure

Sonic Origins
Shared: Action · Adventure · 2D Platformer

OUTRIDERS
Shared: RPG · Action · Adventure