Games like First Up
Games like First Up include Only Climb: Better Together, Neon White, Portal 2, Hot Lava, and Pseudoregalia. We matched them by the tags players give First Up on Steam (Precision Platformer, Parkour, 3D Platformer, Puzzle Platformer, and Platformer): closest matches first, and among equally close ones the better-known games.

Only Climb: Better Together
Shared: Precision Platformer · 3D Platformer · Platformer

Neon White
Shared: 3D Platformer · Parkour · Platformer

Portal 2
Shared: Platformer · Puzzle Platformer · 3D Platformer

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

Pseudoregalia
Shared: 3D Platformer · Parkour · Platformer

Get To Work
Shared: Precision Platformer · 3D Platformer · Funny

Chained Together
Shared: Platformer · Puzzle Platformer · 3D Platformer

Portal
Shared: Puzzle Platformer · 3D Platformer · Funny

Gorilla Tag
Shared: Parkour · 3D Platformer · 3D

Human Fall Flat
Shared: Puzzle Platformer · Funny · PvP

Refunct
Shared: Parkour · 3D Platformer · Puzzle Platformer

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

Prince of Persia®: The Sands of Time
Shared: Parkour · Platformer · Puzzle Platformer

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

Psychonauts
Shared: Platformer · 3D Platformer · Third Person

BETON BRUTAL
Shared: Parkour · Precision Platformer · 3D Platformer

Tomb Raider IV-VI Remastered
Shared: 3D Platformer · Platformer · Precision Platformer

Sunset Overdrive
Shared: Parkour · Character Customization · Action

Celeste
Shared: Precision Platformer · Platformer · Indie

Sonic Lost World
Shared: 3D Platformer · Parkour · Platformer

Clustertruck
Shared: Parkour · 3D Platformer · Action

Rooftops & Alleys: The Parkour Game
Shared: Parkour · 3D Platformer · 3D

NARAKA: BLADEPOINT
Shared: PvP · Character Customization · Action

Sonic Frontiers
Shared: 3D Platformer · 3D · Action

