Games like Climbtime
Games like Climbtime include VRChat, War Thunder, Banana, Superflight, and Touhou Big Big Battle. We matched them by the tags players give Climbtime on Steam (Casual, Indie, Free to Play, Parkour, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

VRChat
Shared: Free to Play · VR · Casual

War Thunder
Shared: Free to Play · VR · Simulation

Banana
Shared: Free to Play · Casual · Simulation

Superflight
Shared: Indie · Casual · Procedural Generation

Touhou Big Big Battle
Shared: Indie · Casual · Free to Play

Where Winds Meet
Shared: Free to Play · Casual · Indie

Climbey
Shared: VR · Parkour · Indie

Retrowave
Shared: Indie · Casual · Racing

Mountain
Shared: Indie · Casual · Simulation

Palia
Shared: Free to Play · Casual · Exploration

Refunct
Shared: Parkour · Casual · 3D Platformer

ERROR143
Shared: Indie · Casual · Free to Play

Bongo Cat
Shared: Free to Play · Casual · Indie

Chained Together
Shared: Casual · Simulation · Indie

Assetto Corsa
Shared: Racing · VR · Simulation

The Sims™ 4
Shared: Free to Play · Simulation · Casual

Game Dev Tycoon
Shared: Indie · Casual · Simulation

Climber Animals: Together
Shared: Casual · Simulation · Indie

F1® 24
Shared: Racing · VR · Simulation

Aimlabs
Shared: Free to Play · Simulation · Indie

Brawlhalla
Shared: Free to Play · Casual · Free To Play

Barn Finders
Shared: Casual · Indie · Simulation

Everything
Shared: Casual · Indie · Simulation

Automobilista 2
Shared: Simulation · Racing · VR