Games like Samurai Ninja Wars
Games like Samurai Ninja Wars include Super Meat Boy, Celeste, Anomaly Agent, First Cut: Samurai Duel, and Super Meat Boy Forever. We matched them by the tags players give Samurai Ninja Wars on Steam (Precision Platformer, Side Scroller, 2D Platformer, Runner, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Super Meat Boy
Shared: Precision Platformer · 2D Platformer · Platformer

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Hack and Slash

First Cut: Samurai Duel
Shared: Side Scroller · Hack and Slash · Martial Arts

Super Meat Boy Forever
Shared: Precision Platformer · Runner · Side Scroller

SHINOBI: Art of Vengeance
Shared: 2D Platformer · Hack and Slash · Side Scroller

Thomas Was Alone
Shared: Side Scroller · Precision Platformer · 2D Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien
Shared: Precision Platformer · Side Scroller · Runner

Katana ZERO
Shared: 2D Platformer · Hack and Slash · Platformer

Hellish Quart
Shared: Hack and Slash · Martial Arts · PvE

Geometry Dash
Shared: Precision Platformer · Side Scroller · 2D

Prince of Persia The Lost Crown
Shared: 2D Platformer · Side Scroller · Precision Platformer

Bō: Path of the Teal Lotus
Shared: Precision Platformer · Side Scroller · 2D Platformer

SANABI
Shared: 2D Platformer · Action · Side Scroller

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

NARAKA: BLADEPOINT
Shared: Martial Arts · PvP · Action

Little Triangle
Shared: Side Scroller · 2D Platformer · Parkour

NINJA GAIDEN: Ragebound
Shared: 2D Platformer · Side Scroller · Platformer

N++ (NPLUSPLUS)
Shared: Precision Platformer · 2D Platformer · Parkour

Broforce
Shared: Side Scroller · Action · Platformer

ICEY
Shared: Side Scroller · Hack and Slash · Action

Nitro Express
Shared: Side Scroller · 2D Platformer · Runner

Lost Castle
Shared: Side Scroller · Hack and Slash · PvP