Games like Focus Tower
Games like Focus Tower include Celeste, Portal 2, Thomas Was Alone, The Pedestrian, and Planet of Lana. We matched them by the tags players give Focus Tower on Steam (Precision Platformer, Side Scroller, 2D Platformer, 3D Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

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

The Pedestrian
Shared: Side Scroller · Puzzle Platformer · Puzzle

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Puzzle

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

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Portal
Shared: Puzzle Platformer · 3D Platformer · Puzzle

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

BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien
Shared: Precision Platformer · Side Scroller · Runner

Prince of Persia The Lost Crown
Shared: 2D Platformer · Side Scroller · Precision Platformer

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

Braid
Shared: 2D Platformer · Puzzle Platformer · Puzzle

Leap Year
Shared: Precision Platformer · 2D Platformer · Puzzle Platformer

SONIC X SHADOW GENERATIONS
Shared: 3D Platformer · 2D Platformer · Platformer

The Deletion
Shared: Precision Platformer · Side Scroller · 2D Platformer

Super Meat Boy Forever
Shared: Precision Platformer · Runner · Side Scroller

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

Mind Over Magnet
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Öoo
Shared: 2D Platformer · Puzzle Platformer · Puzzle

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Geometry Dash
Shared: Precision Platformer · Platformer · Side Scroller

SANABI
Shared: 2D Platformer · Action · Side Scroller

Hue
Shared: Puzzle Platformer · Puzzle · Side Scroller