Games like Spirit Mancer
Games like Spirit Mancer include Anomaly Agent, Blasphemous 2, SANABI, Skul: The Hero Slayer, and Castle Crashers®. We matched them by the tags players give Spirit Mancer on Steam (Side Scroller, Hack and Slash, 2D, Action-Adventure, and Deckbuilding): closest matches first, and among equally close ones the better-known games.

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

Blasphemous 2
Shared: Side Scroller · Fantasy · Hack and Slash

SANABI
Shared: 2D · 2D Platformer · Action

Skul: The Hero Slayer
Shared: 2D · Action · Side Scroller

Castle Crashers®
Shared: 2D · Hack and Slash · Funny

ICEY
Shared: Hack and Slash · Side Scroller · Action

Broforce
Shared: 2D · Action · Side Scroller

Eastern Exorcist
Shared: Side Scroller · 2D · Hack and Slash

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · 2D

PATAPON 1+2 REPLAY
Shared: Action-Adventure · Hack and Slash · Side Scroller

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

Moonstone Island
Shared: 2D · Deckbuilding · Creature Collector

Have a Nice Death
Shared: Hack and Slash · 2D · 2D Platformer

The Vagrant
Shared: 2D · Side Scroller · Hack and Slash

Afterimage
Shared: Side Scroller · 2D Platformer · Hack and Slash

Prince of Persia The Lost Crown
Shared: Side Scroller · 2D Platformer · Action-Adventure

Olija
Shared: Action-Adventure · Fantasy · Action

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

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Side Scroller · 2D · Action-Adventure

Tribal Hunter
Shared: Action-Adventure · 2D Platformer · Side Scroller

Cat Quest
Shared: Hack and Slash · Action · Cute

Trine Enchanted Edition
Shared: Action-Adventure · 2D Platformer · Fantasy

SUPER CHICKEN JUMPER
Shared: 2D · Action-Adventure · Cute

Dust: An Elysian Tail
Shared: 2D · Action · Hack and Slash