Games like Marble Drop
Games like Marble Drop include Portal 2, Portal, LIMBO, Defy Gravity Extended, and FEZ. We matched them by the tags players give Marble Drop on Steam (Platformer, Puzzle, 3D Platformer, Puzzle Platformer, and 3D): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · Singleplayer

Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer

LIMBO
Shared: Puzzle · Platformer · Puzzle Platformer

Defy Gravity Extended
Shared: Platformer · Puzzle Platformer · Puzzle

FEZ
Shared: Platformer · Puzzle · Indie

Braid
Shared: Puzzle · Puzzle Platformer · Platformer

EDGE
Shared: Puzzle · Puzzle Platformer · Platformer

Little Nightmares
Shared: Puzzle Platformer · Puzzle · Singleplayer

Shady Part of Me
Shared: Puzzle · Platformer · Indie

Papo & Yo
Shared: 3D Platformer · Puzzle Platformer · Puzzle

The Last Campfire
Shared: Puzzle · Singleplayer · Indie

Viewfinder
Shared: Puzzle · Puzzle Platformer · Singleplayer

Seen
Shared: Puzzle · Indie · Singleplayer

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

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

INSIDE
Shared: Puzzle Platformer · Indie · Singleplayer

The Pedestrian
Shared: Puzzle · Puzzle Platformer · Platformer

COCOON
Shared: Puzzle · Puzzle Platformer · Indie

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Platformer

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

Squishy the Suicidal Pig
Shared: Platformer · Puzzle · Puzzle Platformer

Hob
Shared: Puzzle · Platformer · Singleplayer

Out There Somewhere
Shared: Platformer · Puzzle · Indie

A Story About My Uncle
Shared: Platformer · Singleplayer · Indie