Games like Roll n' Bounce
Games like Roll n' Bounce include Celeste, SANABI, Super Meat Boy, Geometry Dash, and Downwell. We matched them by the tags players give Roll n' Bounce on Steam (Singleplayer, Precision Platformer, Side Scroller, 2D Platformer, and Action): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Singleplayer · 2D Platformer

SANABI
Shared: Action · Singleplayer · 2D Platformer

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

Geometry Dash
Shared: Precision Platformer · Singleplayer · 2D

Downwell
Shared: Precision Platformer · 2D Platformer · Arcade

VVVVVV
Shared: Precision Platformer · 2D Platformer · Singleplayer

Skul: The Hero Slayer
Shared: Action · Singleplayer · Pixel Graphics

Super Bernie World
Shared: Action · 2D Platformer · Singleplayer

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

Katana ZERO
Shared: Action · 2D Platformer · Pixel Graphics

N++ (NPLUSPLUS)
Shared: Precision Platformer · 2D Platformer · Action

Gravity Circuit
Shared: Action · Singleplayer · 2D Platformer

Pizza Tower
Shared: 2D Platformer · Singleplayer · Action

Ambidextro
Shared: Precision Platformer · 2D Platformer · Action

NINJA GAIDEN: Ragebound
Shared: Action · 2D Platformer · Side Scroller

My Friend Pedro
Shared: Action · Singleplayer · Parkour

Huntdown
Shared: Side Scroller · Action · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Singleplayer · Pixel Graphics · Action

Jump King
Shared: Precision Platformer · Singleplayer · Action

Vampire Survivors
Shared: Singleplayer · Pixel Graphics · 2D

Himno
Shared: Singleplayer · Pixel Graphics · 2D Platformer

Broforce
Shared: Action · Pixel Graphics · Side Scroller

Rogue Legacy 2
Shared: Arcade · Action · Singleplayer

Bloodstained: Curse of the Moon
Shared: Action · Singleplayer · Side Scroller