Games like Cosmic Ball Tournament
Games like Cosmic Ball Tournament include Mirror's Edge™ Catalyst, Portal 2, VHOLUME, ALTF4, and Neon White. We matched them by the tags players give Cosmic Ball Tournament on Steam (Arcade, Platformer, Precision Platformer, Runner, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Mirror's Edge™ Catalyst
Shared: Runner · 3D Platformer · Platformer

Portal 2
Shared: Platformer · First-Person · Puzzle Platformer

VHOLUME
Shared: Platformer · Runner · 3D Platformer

ALTF4
Shared: Runner · 3D Platformer · Arcade

Neon White
Shared: Platformer · 3D Platformer · Precision Platformer

Only Climb: Better Together
Shared: Precision Platformer · Platformer · Arcade

Refunct
Shared: 3D Platformer · Platformer · Puzzle Platformer

PAC-MAN WORLD Re-PAC
Shared: 3D Platformer · Family Friendly · Arcade

Portal
Shared: 3D Platformer · Puzzle Platformer · First-Person

SEUM: Speedrunners from Hell
Shared: Precision Platformer · Platformer · 3D Platformer

White Knuckle
Shared: Platformer · 3D Platformer · Precision Platformer

SONIC X SHADOW GENERATIONS
Shared: Platformer · 3D Platformer · Action

Haste
Shared: 3D Platformer · Runner · Arcade

Kao the Kangaroo (2000 re-release)
Shared: Platformer · Arcade · Runner

BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien
Shared: Precision Platformer · Runner · Platformer

Mirror's Edge™
Shared: 3D Platformer · Platformer · First-Person

Geometry Dash
Shared: Precision Platformer · Platformer · Arcade

Last Train Outta' Wormtown
Shared: Platformer · 3D Platformer · Action

Hot Lava
Shared: Precision Platformer · 3D Platformer · Platformer

Lunistice
Shared: Platformer · 3D Platformer · Arcade

Boson X
Shared: Arcade · Runner · Action

Bomb Rush Cyberfunk
Shared: 3D Platformer · Action · Futuristic

Sonic Adventure DX
Shared: Platformer · 3D Platformer · Action

SpongeBob SquarePants: Titans of the Tide
Shared: Platformer · 3D Platformer · Family Friendly