Games like Balls2
Games like Balls2 include Refunct, Pseudoregalia, Neon White, Chained Together, and VHOLUME. We matched them by the tags players give Balls2 on Steam (Casual, Platformer, 3D Platformer, 3D, and Stylized): closest matches first, and among equally close ones the better-known games.

Refunct
Shared: 3D Platformer · Casual · Parkour

Pseudoregalia
Shared: 3D Platformer · Platformer · 3D

Neon White
Shared: 3D Platformer · Platformer · Parkour

Chained Together
Shared: Platformer · Casual · 3D Platformer

VHOLUME
Shared: 3D Platformer · Platformer · Casual

A Story About My Uncle
Shared: Platformer · Parkour · 3D Platformer

Zup! S
Shared: Casual · Indie · Minimalist

Bomb Rush Cyberfunk
Shared: 3D Platformer · Stylized · Parkour

Mini Motorways
Shared: Casual · Minimalist · Relaxing

Clustertruck
Shared: 3D Platformer · Parkour · Platformer

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

ALTF4
Shared: 3D Platformer · Platformer · Casual

BETON BRUTAL
Shared: 3D Platformer · Casual · Platformer

Wavetale
Shared: 3D Platformer · Platformer · 3D

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

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

Sizeable
Shared: Casual · 3D · Relaxing

Placid Plastic Duck Simulator
Shared: Casual · 3D · Relaxing

Gorilla Tag
Shared: 3D · 3D Platformer · Parkour

Grow Home
Shared: 3D Platformer · Casual · Parkour

WEBFISHING
Shared: Casual · 3D · Stylized

Catto's Post Office
Shared: Casual · 3D Platformer · Platformer

Only Up: With Friends
Shared: Casual · Parkour · 3D Platformer

Donut County
Shared: Casual · Indie · 3D