Games like RunPunk: The parkour game
Games like RunPunk: The parkour game include Portal 2, Portal, Steep™, Uncrashed : FPV Drone Simulator, and Ultimate Fishing Simulator. We matched them by the tags players give RunPunk: The parkour game on Steam (Sports, Action, Puzzle, Platformer, and Idler): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Platformer · First-Person

Portal
Shared: Puzzle · First-Person · Action

Steep™
Shared: Sports · Action · Atmospheric

Uncrashed : FPV Drone Simulator
Shared: Sports · Immersive Sim · First-Person

Ultimate Fishing Simulator
Shared: Sports · 3D · Immersive Sim

Ori and the Will of the Wisps
Shared: Platformer · Action · Puzzle

IRON NEST: Heavy Turret Simulator
Shared: Action · 3D · Realistic

Planet of Lana
Shared: Action · Puzzle · Platformer

A Story About My Uncle
Shared: First-Person · Platformer · Puzzle

LIMBO
Shared: Puzzle · Platformer · Indie

Fatekeeper
Shared: Action · First-Person · Immersive Sim

VLADiK BRUTAL
Shared: Action · First-Person · Puzzle

Mirror's Edge™
Shared: First-Person · Platformer · Puzzle

Liftoff®: FPV Drone Racing
Shared: Sports · First-Person · Realistic

Cyberpunk 2077
Shared: Action · First-Person · Cyberpunk

Grand Theft Auto V Legacy
Shared: Action · First-Person · Open World

Polarity
Shared: Puzzle · Action · First-Person

SUPERHOT
Shared: Action · Puzzle · First-Person

Deus Ex: Mankind Divided
Shared: Action · Immersive Sim · First-Person

Indiana Jones and the Great Circle
Shared: Puzzle · First-Person · Action

PC Building Simulator
Shared: Immersive Sim · 3D · First-Person

Session: Skate Sim
Shared: Sports · Action · Realistic

Defy Gravity Extended
Shared: Platformer · Puzzle · Action

The Exit 8
Shared: Puzzle · Immersive Sim · First-Person