Games like Battle for the Crystals
Games like Battle for the Crystals include Timberman, Vampire Survivors, Shovel Knight: Treasure Trove, UFO 50, and Blasphemous 2. We matched them by the tags players give Battle for the Crystals on Steam (Action RPG, Difficult, Pixel Graphics, Casual, and Retro): closest matches first, and among equally close ones the better-known games.

Timberman
Shared: Pixel Graphics · Casual · Difficult

Vampire Survivors
Shared: Pixel Graphics · Casual · 2D

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Retro · Difficult

UFO 50
Shared: Pixel Graphics · Retro · Action

Blasphemous 2
Shared: Difficult · Pixel Graphics · Fantasy

Black Myth: Wukong
Shared: Action RPG · Action · Combat

Hotline Miami 2: Wrong Number
Shared: Pixel Graphics · Difficult · Action

A Dance of Fire and Ice
Shared: Difficult · 2D · Casual

Rain World
Shared: Difficult · Pixel Graphics · Survival

Celeste
Shared: Difficult · Pixel Graphics · 2D

SANABI
Shared: Pixel Graphics · Action · Difficult

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

Hotline Miami
Shared: Pixel Graphics · Action · Retro

Super Meat Boy
Shared: Difficult · Pixel Graphics · 2D

Jump King
Shared: Difficult · Pixel Graphics · Retro

CrossCode
Shared: Action RPG · Pixel Graphics · 2D

The Escapists
Shared: Pixel Graphics · Difficult · 2D

Bloodstained: Curse of the Moon
Shared: Pixel Graphics · Retro · Action

Rubinite
Shared: Difficult · Pixel Graphics · Action RPG

ELDEN RING
Shared: Difficult · Action RPG · Fantasy

Noita
Shared: Pixel Graphics · Difficult · 2D

Titan Souls
Shared: Difficult · Pixel Graphics · Action

Kingdom Rush Origins - Tower Defense
Shared: Difficult · Casual · 2D

Kingdom Rush - Tower Defense
Shared: Tactical · Casual · 2D