Games like Space Balls
Games like Space Balls include Celeste, Downwell, Super Meat Boy, VVVVVV, and Orbt XL. We matched them by the tags players give Space Balls on Steam (Score Attack, Space, Arcade, Retro, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Pixel Graphics · Precision Platformer · Difficult

Downwell
Shared: Arcade · Pixel Graphics · Precision Platformer

Super Meat Boy
Shared: Pixel Graphics · Platformer · Precision Platformer

VVVVVV
Shared: Pixel Graphics · Retro · Platformer

Orbt XL
Shared: Arcade · Score Attack · Difficult

UFO 50
Shared: Retro · Arcade · Pixel Graphics

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

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

SANABI
Shared: Pixel Graphics · 2D Platformer · Retro

To The Core
Shared: Arcade · Procedural Generation · Retro

Kerbal Space Program
Shared: Space · Physics · Simulation

Super Hexagon
Shared: Arcade · Score Attack · Difficult

Defy Gravity Extended
Shared: Space · Platformer · Indie

Vampire Survivors
Shared: Pixel Graphics · Arcade · Indie

The Messenger
Shared: Retro · Pixel Graphics · Platformer

Jump King
Shared: Pixel Graphics · Precision Platformer · Difficult

Bit Blaster XL
Shared: Arcade · Difficult · Minimalist

Sonic Origins
Shared: Retro · 2D Platformer · Pixel Graphics

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Platformer

Sonic Mania
Shared: Retro · Pixel Graphics · Platformer

PAC-MAN™ Championship Edition DX+
Shared: Arcade · Retro · Score Attack

Papers, Please
Shared: Pixel Graphics · Retro · Indie

Superflight
Shared: Procedural Generation · Physics · Indie

pureya
Shared: Arcade · Score Attack · Casual

