Games like Super Alloy Crush
Games like Super Alloy Crush include Broforce, Hero Siege, ICEY, SANABI, and Momodora: Reverie Under The Moonlight. We matched them by the tags players give Super Alloy Crush on Steam (Side Scroller, Pixel Graphics, Female Protagonist, Local Multiplayer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Pixel Graphics · Co-op · Action

Hero Siege
Shared: Pixel Graphics · Action RPG · Co-op

ICEY
Shared: Female Protagonist · Side Scroller · Action

SANABI
Shared: Pixel Graphics · 2D Platformer · Action

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

BlazBlue Entropy Effect
Shared: Pixel Graphics · Action · Action Roguelike

UFO 50
Shared: Pixel Graphics · Action · Arcade

Bloodstained: Ritual of the Night
Shared: Female Protagonist · Side Scroller · Action

Afterimage
Shared: Female Protagonist · Side Scroller · 2D Platformer

CrossCode
Shared: Pixel Graphics · Female Protagonist · Action RPG

Skul: The Hero Slayer
Shared: Pixel Graphics · Action · Action Roguelike

Vampire Survivors
Shared: Pixel Graphics · Action Roguelike · Arcade

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Action Roguelike

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Pixel Graphics · Side Scroller · Arcade

Celeste
Shared: Pixel Graphics · Female Protagonist · 2D Platformer

METAL SLUG
Shared: Side Scroller · Arcade · Action

Metal Unit
Shared: Female Protagonist · Pixel Graphics · Action

Streets of Rage 4
Shared: Action · Side Scroller · Local Multiplayer

ANNO: Mutationem
Shared: Pixel Graphics · Female Protagonist · RPG

Gal Guardians: Demon Purge
Shared: Side Scroller · 2D Platformer · Action

River City Girls
Shared: Female Protagonist · Pixel Graphics · Action

Rogue Heroes: Ruins of Tasos
Shared: Pixel Graphics · Co-op · Action

The Vagrant
Shared: Female Protagonist · Side Scroller · Action

Full Metal Furies
Shared: Co-op · Action · Female Protagonist