Games like Impulsion
Games like Impulsion include Clustertruck, Portal, Neon White, Portal 2, and DeadCore. We matched them by the tags players give Impulsion on Steam (Indie, Action, 3D Platformer, Sci-fi, and Parkour): closest matches first, and among equally close ones the better-known games.

Clustertruck
Shared: Action · Parkour · 3D Platformer

Portal
Shared: 3D Platformer · Sci-fi · First-Person

Neon White
Shared: 3D Platformer · Action · Parkour

Portal 2
Shared: Platformer · First-Person · Singleplayer

DeadCore
Shared: Action · Indie · Parkour

A Story About My Uncle
Shared: Indie · Parkour · First-Person

Titanfall® 2
Shared: Action · Parkour · Sci-fi

Black Mesa
Shared: Action · Sci-fi · First-Person

DOOM Eternal
Shared: Action · First-Person · Sci-fi

SUPERHOT
Shared: Action · Indie · First-Person

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

DOOM
Shared: Action · First-Person · Sci-fi

My Friend Pedro
Shared: Indie · Action · Parkour

Half-Life 2
Shared: Action · Sci-fi · Singleplayer

Valley
Shared: Indie · Parkour · Action

Cyber Hook
Shared: Indie · 3D Platformer · Action

Hollow Knight
Shared: Indie · Difficult · Platformer

Hollow Knight: Silksong
Shared: Indie · Difficult · Platformer

Ghostrunner
Shared: Action · Difficult · First-Person

Defy Gravity Extended
Shared: Indie · Action · Platformer

Pizza Tower
Shared: Indie · Action · Platformer

Bright Memory: Infinite
Shared: Action · Indie · Sci-fi

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

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