Games like Septic
Games like Septic include White Knuckle, Hot Lava, Lorn's Lure, PEAK, and Mirror's Edge™. We matched them by the tags players give Septic on Steam (Exploration, Precision Platformer, 3D Platformer, Parkour, and Difficult): closest matches first, and among equally close ones the better-known games.

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

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

Lorn's Lure
Shared: Parkour · 3D Platformer · Difficult

PEAK
Shared: Exploration · First-Person · 3D

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

BETON BRUTAL
Shared: 3D Platformer · Precision Platformer · Parkour

Celeste
Shared: Precision Platformer · Difficult · Platformer

Pseudoregalia
Shared: 3D Platformer · Exploration · Parkour

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

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

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

Neon White
Shared: 3D Platformer · Parkour · Platformer

Valley
Shared: Exploration · Parkour · First-Person

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

Hollow Knight
Shared: Platformer · Difficult · Exploration

Rain World
Shared: Exploration · Difficult · Platformer

Peaks of Yore
Shared: Difficult · Exploration · Platformer

Sonic Frontiers
Shared: 3D Platformer · Exploration · Action

Toree 3D
Shared: 3D Platformer · Platformer · Exploration

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

R.E.P.O.
Shared: Horror · 3D · First-Person

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

Escape the Backrooms
Shared: Exploration · Horror · First-Person