Games like Spidersaurs
Games like Spidersaurs include Celeste, Alex Jones: NWO Wars, Mirage Feathers, Huntdown, and Muse Dash. We matched them by the tags players give Spidersaurs on Steam (Precision Platformer, 2D Platformer, Shoot 'Em Up, Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.
Celeste
Shared: Precision Platformer · 2D Platformer · Female Protagonist
Alex Jones: NWO Wars
Shared: 2D Platformer · Shooter · Arcade
Mirage Feathers
Shared: Shoot 'Em Up · Cute · Shooter
Huntdown
Shared: Shooter · Shoot 'Em Up · Action
Muse Dash
Shared: Female Protagonist · Cute · Anime
Downwell
Shared: Precision Platformer · 2D Platformer · Arcade
Contra: Operation Galuga
Shared: Shooter · 2D Platformer · Arcade
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Female Protagonist · Action
METAL SLUG
Shared: Arcade · Shoot 'Em Up · 2D
Nova Drift
Shared: Shoot 'Em Up · Arcade · Shooter
Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Arcade
DRAINUS
Shared: Shoot 'Em Up · Shooter · Action
SUPER CHICKEN JUMPER
Shared: Arcade · 2D · Cute
Nitro Express
Shared: 2D Platformer · Shooter · Female Protagonist
Neptunia Shooter
Shared: Shoot 'Em Up · Action · Female Protagonist
Pepper Grinder
Shared: 2D Platformer · Arcade · Female Protagonist
Super Meat Boy
Shared: Precision Platformer · 2D Platformer · 2D
Exit the Gungeon
Shared: Arcade · Action · 2D Platformer
Mushihimesama
Shared: Shoot 'Em Up · Arcade · Action
Black Market of Bulletphilia ~ 100th Black Market.
Shared: Shoot 'Em Up · Shooter · Female Protagonist
Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Female Protagonist · 2D
Deathsmiles
Shared: Shoot 'Em Up · Arcade · Female Protagonist
Shotgun Cop Man
Shared: Precision Platformer · Shooter · Arcade
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part III
Shared: Shoot 'Em Up · Female Protagonist · 2D