Games like Seeker
Games like Seeker include SANABI, Skul: The Hero Slayer, Blasphemous, Katana ZERO, and Celeste. We matched them by the tags players give Seeker on Steam (Pixel Graphics, Action, Dark Fantasy, 2D Platformer, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Pixel Graphics · Action · 2D Platformer

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

Blasphemous
Shared: Pixel Graphics · Dark Fantasy · Action

Katana ZERO
Shared: Pixel Graphics · Action · 2D Platformer

Celeste
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Mina the Hollower
Shared: Pixel Graphics · Action-Adventure · 2D Platformer

Dead Cells
Shared: Pixel Graphics · Adventure · 2D

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Action · Adventure

BlazBlue Entropy Effect
Shared: Action · Pixel Graphics · Action-Adventure

Owlboy
Shared: Pixel Graphics · Adventure · Action

Black Myth: Wukong
Shared: Action · Dark Fantasy · Action-Adventure

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Action

Bloodstained: Curse of the Moon
Shared: Pixel Graphics · Action · 2D

Blasphemous 2
Shared: Pixel Graphics · Adventure · 2D Platformer

Hogwarts Legacy
Shared: Adventure · Singleplayer · Magic

Broforce
Shared: Pixel Graphics · Action · 2D

The Messenger
Shared: Pixel Graphics · Action · 2D

Super Meat Boy
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Ambidextro
Shared: Action · Pixel Graphics · 2D Platformer

Momodora: Moonlit Farewell
Shared: Pixel Graphics · Action-Adventure · 2D

Souldiers
Shared: Pixel Graphics · Action · Action-Adventure

Sonic Origins
Shared: Action · 2D Platformer · Pixel Graphics

Dungeon Munchies
Shared: Action · Pixel Graphics · Adventure

Deaths Gambit: Afterlife
Shared: Pixel Graphics · Dark Fantasy · Action