Games like Fizik
Games like Fizik include Portal, Portal 2, Neon White, Refunct, and SEUM: Speedrunners from Hell. We matched them by the tags players give Fizik on Steam (Precision Platformer, 3D Platformer, Puzzle Platformer, Parkour, and Platformer): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle Platformer · 3D Platformer · First-Person

Portal 2
Shared: Platformer · Puzzle Platformer · First-Person

Neon White
Shared: 3D Platformer · Parkour · Platformer

Refunct
Shared: 3D Platformer · Parkour · Puzzle Platformer

SEUM: Speedrunners from Hell
Shared: 3D Platformer · Precision Platformer · Parkour

Clustertruck
Shared: Parkour · 3D Platformer · First-Person

Mirror's Edge™
Shared: Parkour · 3D Platformer · First-Person

Mirror's Edge™ Catalyst
Shared: Parkour · 3D Platformer · First-Person

White Knuckle
Shared: Parkour · 3D Platformer · Precision Platformer

Hot Lava
Shared: Precision Platformer · 3D Platformer · Parkour

Bomb Rush Cyberfunk
Shared: 3D Platformer · Parkour · Action

Gorilla Tag
Shared: Parkour · First-Person · 3D Platformer

A Story About My Uncle
Shared: Parkour · First-Person · 3D Platformer

VHOLUME
Shared: Parkour · 3D Platformer · First-Person

Cyber Hook
Shared: 3D Platformer · Parkour · Action

Last Train Outta' Wormtown
Shared: 3D Platformer · Platformer · Action

Pseudoregalia
Shared: 3D Platformer · Parkour · Platformer

DeadCore
Shared: Platformer · Parkour · Action

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Action

FrostRunner
Shared: Parkour · 3D Platformer · Action

Super Meat Boy 3D
Shared: Precision Platformer · 3D Platformer · Platformer

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

Celeste
Shared: Precision Platformer · Platformer · Indie

Titanfall® 2
Shared: Parkour · Action · First-Person