Games like Headlander
Games like Headlander include Ori and the Will of the Wisps, The Messenger, Hollow Knight, Axiom Verge, and Shovel Knight: Treasure Trove. We matched them by the tags players give Headlander on Steam (Sci-fi, Action, Metroidvania, Platformer, and Comedy): closest matches first, and among equally close ones the better-known games.

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

The Messenger
Shared: Metroidvania · Platformer · Retro

Hollow Knight
Shared: Metroidvania · Platformer · Great Soundtrack

Axiom Verge
Shared: Metroidvania · Platformer · Action

Shovel Knight: Treasure Trove
Shared: Platformer · Action · Retro

Portal
Shared: Sci-fi · Comedy · Action

Pizza Tower
Shared: Great Soundtrack · Platformer · Funny

Bloodstained: Ritual of the Night
Shared: Metroidvania · Action · Side Scroller

Far Cry 3 - Blood Dragon
Shared: Action · Comedy · Sci-fi

Psychonauts
Shared: Platformer · Action · Comedy

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

Hollow Knight: Silksong
Shared: Metroidvania · Platformer · Great Soundtrack

UnEpic
Shared: Metroidvania · Action · Platformer

Portal 2
Shared: Platformer · Singleplayer · Funny

Bloodstained: Curse of the Moon
Shared: Action · Platformer · Metroidvania

BattleBlock Theater®
Shared: Platformer · Comedy · Funny

Gato Roboto
Shared: Action · Metroidvania · Platformer

Angry Video Game Nerd Adventures
Shared: Action · Platformer · Comedy

Sonic Mania
Shared: Platformer · Great Soundtrack · Retro

My Friend Pedro
Shared: Action · Platformer · Side Scroller

Hell Yeah! Wrath of the Dead Rabbit
Shared: Action · Platformer · Comedy

Guacamelee! Gold Edition
Shared: Metroidvania · Action · Platformer

Sonic Adventure 2
Shared: Action · Platformer · Great Soundtrack

STRIDER
Shared: Action · Metroidvania · Platformer