Games like Marble Run 2D
Games like Marble Run 2D include Portal 2, Portal, LIMBO, Supraland, and Geometry Dash. We matched them by the tags players give Marble Run 2D on Steam (Side Scroller, 3D Platformer, Puzzle Platformer, Physics, and FPS): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle Platformer · Puzzle

Portal
Shared: Puzzle Platformer · 3D Platformer · Puzzle

LIMBO
Shared: Puzzle Platformer · Platformer · Puzzle

Supraland
Shared: Puzzle Platformer · Physics · FPS

Geometry Dash
Shared: 2D · Platformer · Level Editor

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

Climber Animals: Together
Shared: Physics · Puzzle Platformer · 3D Platformer

The Pedestrian
Shared: Puzzle Platformer · Side Scroller · Puzzle

The Bridge
Shared: Puzzle Platformer · Physics · 2D

Chained Together
Shared: Platformer · Puzzle Platformer · 3D Platformer

Trine 2: Complete Story
Shared: Puzzle Platformer · Platformer · Puzzle

Braid
Shared: Puzzle Platformer · Puzzle · Platformer

Viewfinder
Shared: Puzzle Platformer · Puzzle · Physics

Hue
Shared: Puzzle Platformer · Puzzle · Platformer

Teslagrad
Shared: Platformer · Puzzle · Puzzle Platformer

Human Fall Flat
Shared: Physics · Puzzle Platformer · Puzzle

Webbed
Shared: Physics · Puzzle Platformer · 2D

Thomas Was Alone
Shared: Side Scroller · Platformer · Puzzle Platformer

Quantum Conundrum
Shared: Puzzle Platformer · 3D Platformer · Physics

Sonic Mania
Shared: Platformer · 2D · Side Scroller

Poly Bridge
Shared: Physics · Puzzle · Simulation

Oddworld: New 'n' Tasty
Shared: Puzzle Platformer · Platformer · Puzzle

Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · 3D Platformer · Puzzle

Bridge Constructor Portal
Shared: Physics · Puzzle · Simulation