Games like Climbing Forever
Games like Climbing Forever include SANABI, Skul: The Hero Slayer, Dead Cells, Katana ZERO, and Anomaly Agent. We matched them by the tags players give Climbing Forever on Steam (2D Platformer, Roguelite, Platformer, Story Rich, and Roguelike): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Story Rich · 2D Platformer · Platformer

Skul: The Hero Slayer
Shared: Roguelite · Roguelike · Platformer

Dead Cells
Shared: Roguelike · Roguelite · 2D

Katana ZERO
Shared: Story Rich · Platformer · 2D Platformer

Anomaly Agent
Shared: 2D Platformer · Platformer · Side Scroller

Rogue Legacy
Shared: Platformer · Roguelike · Roguelite

Celeste
Shared: 2D Platformer · Platformer · Story Rich

Rogue Legacy 2
Shared: Platformer · Roguelite · Action

30XX
Shared: 2D Platformer · Roguelite · Platformer

Caveblazers
Shared: Platformer · Roguelite · 2D Platformer

Neon Abyss
Shared: Platformer · Roguelike · Procedural Generation

Dungreed
Shared: Roguelite · Roguelike · 2D

Blade Assault
Shared: 2D Platformer · Platformer · Roguelike

Vampire Survivors
Shared: Roguelite · 2D · Roguelike

Hades
Shared: Roguelite · Roguelike · Story Rich

20XX
Shared: Platformer · 2D Platformer · Roguelite

ScourgeBringer
Shared: Roguelite · Roguelike · Platformer

Hollow Knight
Shared: Platformer · 2D · Story Rich

Super Meat Boy
Shared: Platformer · 2D Platformer · 2D

Thomas Was Alone
Shared: Platformer · 2D Platformer · Side Scroller

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Spelunky 2
Shared: 2D Platformer · Platformer · Procedural Generation

Risk of Rain (2013)
Shared: Platformer · Roguelike · Action

Hades II
Shared: Roguelite · Roguelike · Action