Games like Stickit
Games like Stickit include Gorilla Tag, Jump King, Hot Lava, Getting Over It with Bennett Foddy, and Pogostuck: Rage With Your Friends. We matched them by the tags players give Stickit on Steam (Difficult, Precision Platformer, Psychological Horror, 3D Platformer, and Parkour): closest matches first, and among equally close ones the better-known games.

Gorilla Tag
Shared: Psychological Horror · Parkour · 3D Platformer

Jump King
Shared: Difficult · Psychological Horror · Precision Platformer

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

Getting Over It with Bennett Foddy
Shared: Difficult · Psychological Horror · Platformer

Pogostuck: Rage With Your Friends
Shared: Difficult · Psychological Horror · Precision Platformer

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

Geometry Dash
Shared: Difficult · Precision Platformer · Psychological Horror

A Difficult Game About Climbing
Shared: Difficult · Psychological Horror · Precision Platformer

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

Celeste
Shared: Difficult · Precision Platformer · Platformer

Peaks of Yore
Shared: Difficult · Psychological Horror · Exploration

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

Clustertruck
Shared: Parkour · 3D Platformer · Difficult

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

Pseudoregalia
Shared: 3D Platformer · Parkour · Exploration

Only Climb: Better Together
Shared: Precision Platformer · Difficult · 3D Platformer

Hello Neighbor
Shared: Difficult · First-Person · 3D Platformer

Get To Work
Shared: Difficult · Precision Platformer · 3D Platformer

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

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

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Hollow Knight
Shared: Difficult · Platformer · Exploration

Lethal Company
Shared: Psychological Horror · First-Person · Exploration

Ikarus Parkour
Shared: Difficult · 3D Platformer · Precision Platformer