Games like Ninja Attack
Games like Ninja Attack include Dust: An Elysian Tail, Mark of the Ninja, ICEY, The Vagrant, and Skul: The Hero Slayer. We matched them by the tags players give Ninja Attack on Steam (Action, Singleplayer, Survival, 2D, and Beat 'em up): closest matches first, and among equally close ones the better-known games.

Dust: An Elysian Tail
Shared: Action · Singleplayer · 2D

Mark of the Ninja
Shared: Action · 2D · Singleplayer

ICEY
Shared: Action · Singleplayer · Side Scroller

The Vagrant
Shared: Action · 2D · Side Scroller

Skul: The Hero Slayer
Shared: Action · 2D · Singleplayer

Terraria
Shared: Survival · 2D · Adventure

Streets of Rage 4
Shared: Action · Beat 'em up · 2D

Shank
Shared: Action · Beat 'em up · 2D

Crimson Desert Enhanced
Shared: Singleplayer · Action · Fantasy

Mark of the Ninja: Remastered
Shared: Action · 2D · Ninja

God of War
Shared: Action · Singleplayer · Adventure

Eastern Exorcist
Shared: Action · 2D · Side Scroller

Deadlight
Shared: Action · Singleplayer · Side Scroller

Shank 2
Shared: Action · Beat 'em up · 2D

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Beat 'em up · 2D · Side Scroller

SANABI
Shared: Action · Singleplayer · 2D

Rise of the Tomb Raider™
Shared: Action · Singleplayer · Adventure

Zombotron
Shared: Action · 2D · Singleplayer

Hollow Knight
Shared: 2D · Singleplayer · Indie

NARUTO SHIPPUDEN: Ultimate Ninja STORM 3 Full Burst HD
Shared: Action · Singleplayer · Ninja

Absolum
Shared: Beat 'em up · Action · Hand-drawn

Castle Crashers®
Shared: 2D · Beat 'em up · Action

Ghost of Tsushima DIRECTOR'S CUT
Shared: Action · Singleplayer · Ninja

Rogue Legacy
Shared: Action · Singleplayer · 2D