Games like Crystal Survivor
Games like Crystal Survivor include Nova Drift, Vampire Survivors, SNKRX, Brotato, and 20 Minutes Till Dawn. We matched them by the tags players give Crystal Survivor on Steam (Casual, Shoot 'Em Up, Arena Shooter, Shooter, and Survival): closest matches first, and among equally close ones the better-known games.

Nova Drift
Shared: Shoot 'Em Up · Arena Shooter · Action Roguelike

Vampire Survivors
Shared: Action Roguelike · Casual · 2D

SNKRX
Shared: Arena Shooter · Shoot 'Em Up · Action Roguelike

Brotato
Shared: Action Roguelike · Arena Shooter · Survival

20 Minutes Till Dawn
Shared: Shoot 'Em Up · Survival · Action Roguelike

God Of Weapons
Shared: Arena Shooter · Action Roguelike · Survival

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Casual

Planes, Bullets and Vodka
Shared: Casual · Shoot 'Em Up · Action

FatalZone
Shared: Survival · Action Roguelike · Arena Shooter

Time Wasters
Shared: Arena Shooter · Shoot 'Em Up · Action Roguelike

Megabonk
Shared: Action Roguelike · Survival · Action

PUBG: BATTLEGROUNDS
Shared: Shooter · Survival · Action

Strike Force Heroes
Shared: Shooter · Arena Shooter · Action

Warframe
Shared: Action · Action RPG · RPG

BioShock Infinite
Shared: Shooter · Action · Singleplayer

Beautiful Mystic Survivors
Shared: Shoot 'Em Up · Casual · Action Roguelike

Mass Effect™ Legendary Edition
Shared: Sci-fi · Action · RPG

Zombotron
Shared: Action · Shooter · Shoot 'Em Up

Twilight Survivors
Shared: Shoot 'Em Up · Action Roguelike · Action RPG

Arms of God
Shared: Arena Shooter · Action Roguelike · Casual

Octogeddon
Shared: Shoot 'Em Up · Casual · Action

Alien Shooter 2 - The Legend
Shared: Shooter · Action RPG · Shoot 'Em Up

Fallout 4
Shared: Shooter · Action · Singleplayer

Aliens: Fireteam Elite
Shared: Shooter · Action · Survival