Games like Speard
Games like Speard include Clustertruck, Neon White, Celeste, A Story About My Uncle, and SEUM: Speedrunners from Hell. We matched them by the tags players give Speard on Steam (Precision Platformer, Strategy, Action, 3D Platformer, and Parkour): closest matches first, and among equally close ones the better-known games.

Clustertruck
Shared: Action · Parkour · 3D Platformer

Neon White
Shared: 3D Platformer · Parkour · Action

Celeste
Shared: Precision Platformer · Difficult · Indie

A Story About My Uncle
Shared: Adventure · Parkour · First-Person

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

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

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Jump King
Shared: Precision Platformer · Difficult · Adventure

Portal 2
Shared: Platformer · 3D Platformer · First-Person

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

Haste
Shared: Parkour · 3D Platformer · Action

Cyber Hook
Shared: 3D Platformer · Action · Parkour

Geometry Dash
Shared: Precision Platformer · Difficult · Platformer

Valley
Shared: Adventure · Parkour · Action

Cloudbuilt
Shared: Action · Parkour · 3D Platformer

FrostRunner
Shared: Action · Parkour · 3D Platformer

The End Is Nigh
Shared: Precision Platformer · Difficult · Indie

Get To Work
Shared: Precision Platformer · Adventure · Difficult

A Difficult Game About Climbing
Shared: Precision Platformer · Difficult · Adventure

Hollow Knight
Shared: Difficult · Platformer · Indie

BEEP
Shared: Adventure · Indie · Action

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

Pogostuck: Rage With Your Friends
Shared: Precision Platformer · Difficult · Action

DeadCore
Shared: Action · Parkour · Platformer