Games like MomentumBall
Games like MomentumBall include Celeste, Super Meat Boy, Downwell, VVVVVV, and Geometry Dash. We matched them by the tags players give MomentumBall on Steam (Precision Platformer, Casual, Physics, 2D Platformer, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

Super Meat Boy
Shared: Precision Platformer · Platformer · 2D Platformer

Downwell
Shared: Precision Platformer · Platformer · 2D Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Geometry Dash
Shared: Precision Platformer · Singleplayer · 2D

Vampire Survivors
Shared: Casual · Singleplayer · Indie

SANABI
Shared: 2D Platformer · Singleplayer · Pixel Graphics

Pizza Tower
Shared: 2D Platformer · Indie · Platformer

BEEP
Shared: Platformer · Indie · Physics

Getting Over It with Bennett Foddy
Shared: Physics · Singleplayer · Platformer

People Playground
Shared: Physics · Singleplayer · 2D

Webbed
Shared: 2D Platformer · Physics · Pixel Graphics

Zup! S
Shared: Casual · Physics · Indie

Thomas Was Alone
Shared: Precision Platformer · Platformer · 2D Platformer

Timberman
Shared: Casual · Indie · Singleplayer

Katana ZERO
Shared: Platformer · 2D Platformer · Pixel Graphics

Peggle Deluxe
Shared: Casual · Singleplayer · Physics

Jump King
Shared: Precision Platformer · Indie · Platformer

FEZ
Shared: Platformer · Indie · Casual

The End Is Nigh
Shared: Precision Platformer · Platformer · Indie

pureya
Shared: Casual · Singleplayer · Arcade

Defy Gravity Extended
Shared: Platformer · Indie · Singleplayer

Braid
Shared: 2D Platformer · Platformer · Indie

Marble Mayhem: Fragile Ball
Shared: Casual · Indie · Singleplayer