Games like FourthMotion
Games like FourthMotion include ALTF4, Haste, Climber Animals: Together, Mirror's Edge™ Catalyst, and Clustertruck. We matched them by the tags players give FourthMotion on Steam (3D Platformer, Runner, Bikes, Mechs, and Motorbike): closest matches first, and among equally close ones the better-known games.

ALTF4
Shared: Runner · 3D Platformer · Physics

Haste
Shared: 3D Platformer · Parkour · Runner

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

Mirror's Edge™ Catalyst
Shared: Runner · 3D Platformer · Parkour

Clustertruck
Shared: 3D Platformer · Parkour · Physics

VHOLUME
Shared: 3D Platformer · Runner · Parkour

Neon White
Shared: 3D Platformer · Parkour · Platformer

Pseudoregalia
Shared: 3D Platformer · Parkour · Platformer

Boson X
Shared: Runner · Parkour · 3D Platformer

Refunct
Shared: 3D Platformer · Parkour · Platformer

Chained Together
Shared: 3D Platformer · Platformer · Casual

ARMORED CORE™ VI FIRES OF RUBICON™
Shared: Mechs · Robots · Action

Rooftops & Alleys: The Parkour Game
Shared: 3D Platformer · Parkour · Simulation

Grow Home
Shared: 3D Platformer · Robots · Parkour

Crumble
Shared: 3D Platformer · Parkour · Platformer

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

Portal
Shared: 3D Platformer · Physics · Action

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

Gorilla Tag
Shared: 3D Platformer · Parkour · Physics

Bloodthief
Shared: Runner · 3D Platformer · Parkour

Titanfall® 2
Shared: Mechs · Parkour · Action

Idols of Ash
Shared: 3D Platformer · Parkour · Physics

Cyber Hook
Shared: 3D Platformer · Parkour · Indie

Only Up: With Friends
Shared: Parkour · 3D Platformer · Casual