Games like Magnetism
Games like Magnetism include Portal, Portal 2, Defy Gravity Extended, Monument Valley 2, and Quantum Conundrum. We matched them by the tags players give Magnetism on Steam (Strategy, Casual, Puzzle, Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle · Puzzle Platformer · First-Person

Portal 2
Shared: Puzzle · Platformer · First-Person

Defy Gravity Extended
Shared: Platformer · Puzzle Platformer · Puzzle

Monument Valley 2
Shared: Strategy · Casual · Puzzle

Quantum Conundrum
Shared: Puzzle · Puzzle Platformer · Casual

LIMBO
Shared: Puzzle · Puzzle Platformer · Platformer

Polarity
Shared: Puzzle · First-Person · Strategy

The Ball
Shared: Strategy · Puzzle · Puzzle Platformer

Zup! S
Shared: Casual · Puzzle · Indie

BEEP
Shared: Platformer · Puzzle · Casual

Buckshot Roulette
Shared: Strategy · First-Person · 3D

Zup!
Shared: Casual · Puzzle · Puzzle Platformer

Braid
Shared: Puzzle · Puzzle Platformer · Platformer

FEZ
Shared: Puzzle · Platformer · Casual

Planet of Lana
Shared: Puzzle Platformer · Puzzle · Platformer

Q.U.B.E: Director's Cut
Shared: Puzzle · First-Person · Sci-fi

The Bridge
Shared: Puzzle Platformer · Puzzle · Strategy

Zup! 3
Shared: Casual · Puzzle · Puzzle Platformer

Hexcells
Shared: Casual · Puzzle · Strategy

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

Moncage
Shared: Casual · Puzzle · Indie

The Talos Principle 2
Shared: Puzzle · First-Person · Puzzle Platformer

Moonleap
Shared: Puzzle · Puzzle Platformer · Platformer

Mini Motorways
Shared: Strategy · Casual · Puzzle