Games like Heartseeker
Games like Heartseeker include Super Meat Boy, Pizza Tower, Celeste, Katana ZERO, and SANABI. We matched them by the tags players give Heartseeker on Steam (Action, Fast-Paced, Point & Click, Time Attack, and Indie): closest matches first, and among equally close ones the better-known games.

Super Meat Boy
Shared: Precision Platformer · Indie · Fast-Paced

Pizza Tower
Shared: Fast-Paced · Indie · 2D Platformer

Celeste
Shared: Precision Platformer · Indie · 2D Platformer

Katana ZERO
Shared: Action · Indie · Pixel Graphics

SANABI
Shared: Action · 2D Platformer · Pixel Graphics

Downwell
Shared: Precision Platformer · Indie · Action

Gravity Circuit
Shared: Action · Indie · Fast-Paced

VVVVVV
Shared: Precision Platformer · Indie · 2D Platformer

Hotline Miami
Shared: Action · Indie · Fast-Paced

ANTONBLAST
Shared: Action · Fast-Paced · 2D

Skul: The Hero Slayer
Shared: Action · Indie · 2D

Hotline Miami 2: Wrong Number
Shared: Action · Fast-Paced · Pixel Graphics

Jump King
Shared: Indie · Precision Platformer · Action

Papers, Please
Shared: Point & Click · Indie · Singleplayer

Ambidextro
Shared: Action · Precision Platformer · Indie

The Messenger
Shared: Action · Retro · 2D

Sonic Mania
Shared: Fast-Paced · 2D · Action

Shovel Knight: Treasure Trove
Shared: Action · Indie · 2D

Sonic Origins
Shared: Action · 2D Platformer · Fast-Paced

Broforce
Shared: Action · 2D · Indie

Freedom Planet
Shared: Action · Indie · Fast-Paced

Duck Game
Shared: Action · 2D · Fast-Paced

Neon White
Shared: Fast-Paced · Action · Indie

One Finger Death Punch
Shared: Action · Fast-Paced · Indie