Games like Felix Jumpman
Games like Felix Jumpman include Hollow Knight, Pumpkin Jack, Sonic Frontiers, Ori and the Will of the Wisps, and Deliver Us The Moon. We matched them by the tags players give Felix Jumpman on Steam (Indie, Action, 3D Platformer, Singleplayer, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Indie · Singleplayer

Pumpkin Jack
Shared: Action · 3D Platformer · Indie

Sonic Frontiers
Shared: 3D Platformer · Action · Singleplayer

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

Deliver Us The Moon
Shared: Indie · Action · Adventure

Getting Over It with Bennett Foddy
Shared: Singleplayer · Psychological Horror · Indie

Hollow Knight: Silksong
Shared: Indie · Singleplayer · Platformer

A Story About My Uncle
Shared: Indie · Singleplayer · Adventure

Portal 2
Shared: Singleplayer · Platformer · 3D Platformer

Neon White
Shared: 3D Platformer · Action · Platformer

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Valley
Shared: Indie · Singleplayer · Action

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Action · 3D Platformer · Platformer

Sonic Adventure 2
Shared: Action · 3D Platformer · Platformer

SONIC X SHADOW GENERATIONS
Shared: Action · 3D Platformer · Platformer

Yooka-Laylee
Shared: 3D Platformer · Indie · Action

Outer Wilds
Shared: Space · Indie · Exploration

Hob
Shared: Action · Indie · Singleplayer

Sonic Adventure DX
Shared: 3D Platformer · Platformer · Action

Deadlight
Shared: Action · Indie · Platformer

We Happy Few
Shared: Action · Indie · Adventure

Jump King
Shared: Indie · Psychological Horror · Action

Psychonauts
Shared: Platformer · Action · Singleplayer

Rise of the Tomb Raider™
Shared: Action · Singleplayer · Adventure