Games like Thunderblade Saga
Games like Thunderblade Saga include Skul: The Hero Slayer, Stick It to the Stickman, Rogue Legacy 2, One Finger Death Punch, and Vampire Survivors. We matched them by the tags players give Thunderblade Saga on Steam (Action, 2D Fighter, Action-Adventure, Beat 'em up, and Roguelike): closest matches first, and among equally close ones the better-known games.

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

Stick It to the Stickman
Shared: Action · Beat 'em up · 2D Fighter

Rogue Legacy 2
Shared: Action · Arcade · Roguelite

One Finger Death Punch
Shared: Action · 2D Fighter · Beat 'em up

Vampire Survivors
Shared: Roguelite · Roguelike · Action

BALL x PIT
Shared: Action · Arcade · Roguelike

Anomaly Agent
Shared: 2D Platformer · 2D Fighter · Action-Adventure

SANABI
Shared: Action · 2D Platformer · Action-Adventure

BlazBlue Entropy Effect
Shared: Action · Action-Adventure · 2D

Streets of Rage 4
Shared: Action · Beat 'em up · Arcade

Dead Cells
Shared: Roguelike · Adventure · Roguelite

Rogue Legacy
Shared: Action · Roguelike · Indie

暖雪 Warm Snow
Shared: Action-Adventure · Roguelike · Roguelite

Megabonk
Shared: Roguelike · Action · Roguelite

Demon Slayer -Kimetsu no Yaiba- The Hinokami Chronicles
Shared: Action · Action-Adventure · 2D Fighter

Hades
Shared: Action · Roguelite · Roguelike

Iron Snout
Shared: 2D Fighter · Action · 2D

Absolum
Shared: Beat 'em up · Action · Roguelite

Lost Castle 2
Shared: Beat 'em up · Roguelike · Action-Adventure

Nickelodeon All-Star Brawl
Shared: 2D Fighter · Action · Beat 'em up

DRAGON BALL FighterZ
Shared: Action · 2D Fighter · Arcade

Blade Assault
Shared: Action · Roguelike · Action-Adventure

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Beat 'em up · Action-Adventure · Action

Hades II
Shared: Action · Roguelike · Roguelite