Games like RollingBall
Games like RollingBall include Pseudoregalia, Chained Together, ALTF4, Spark the Electric Jester 3, and VHOLUME. We matched them by the tags players give RollingBall on Steam (3D Platformer, Casual, Platformer, 3D, and Third Person): closest matches first, and among equally close ones the better-known games.

Pseudoregalia
Shared: 3D Platformer · Platformer · 3D

Chained Together
Shared: Platformer · Casual · 3D Platformer

ALTF4
Shared: 3D Platformer · Third Person · Platformer

Spark the Electric Jester 3
Shared: 3D Platformer · 3D · Platformer

VHOLUME
Shared: 3D Platformer · Platformer · Casual

Yellow Taxi Goes Vroom
Shared: 3D Platformer · 3D · Platformer

Ratchet & Clank: Rift Apart
Shared: 3D Platformer · Third Person · Platformer

Crash Bandicoot™ 4: It’s About Time
Shared: 3D Platformer · Platformer · 3D

Psychonauts
Shared: Platformer · 3D Platformer · Third Person

Sonic Adventure DX
Shared: 3D Platformer · Platformer · Third Person

Only Climb: Better Together
Shared: 3D Platformer · Platformer · 3D

Pumpkin Jack
Shared: 3D Platformer · Third Person · Platformer

Climber Animals: Together
Shared: Platformer · Casual · 3D Platformer

Toree 3D
Shared: 3D Platformer · Platformer · 3D

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

Wavetale
Shared: 3D Platformer · Platformer · 3D

Sonic Adventure 2
Shared: 3D Platformer · Platformer · Third Person

Portal 2
Shared: Platformer · 3D Platformer · Singleplayer

Psychonauts 2
Shared: 3D Platformer · Platformer · Cartoony

Tiny and Big: Grandpas Leftovers
Shared: Platformer · 3D Platformer · Indie

Sonic Frontiers
Shared: 3D Platformer · 3D · Platformer

Portal
Shared: 3D Platformer · Sci-fi · Singleplayer

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

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: 3D Platformer · Casual · Platformer