Games like Rushmark
Games like Rushmark include Super Meat Boy, Celeste, Katana ZERO, Downwell, and SANABI. We matched them by the tags players give Rushmark on Steam (Precision Platformer, Action, 2D Platformer, Difficult, and Fast-Paced): closest matches first, and among equally close ones the better-known games.

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

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Katana ZERO
Shared: Action · 2D Platformer · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Action

SANABI
Shared: Action · 2D Platformer · Cyberpunk

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

Pizza Tower
Shared: 2D Platformer · Fast-Paced · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Ghostrunner
Shared: Action · Fast-Paced · Difficult

Super Hexagon
Shared: Difficult · Fast-Paced · Action

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

Dustforce DX
Shared: Precision Platformer · Platformer · Difficult

Rogue Legacy 2
Shared: Action · Platformer · Arcade

Bzzzt
Shared: Precision Platformer · 2D Platformer · Difficult

Jump King
Shared: Precision Platformer · Difficult · Action

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

Super Meat Boy Forever
Shared: Action · Precision Platformer · Difficult

Spelunky 2
Shared: 2D Platformer · Difficult · Platformer

Will You Snail?
Shared: Precision Platformer · Difficult · 2D Platformer

Ambidextro
Shared: Precision Platformer · Action · 2D Platformer

Dungeon Escape
Shared: Precision Platformer · 2D Platformer · Difficult

SONIC X SHADOW GENERATIONS
Shared: Action · Fast-Paced · Platformer

Remnants of Naezith
Shared: Precision Platformer · Action · Platformer

Hollow Knight
Shared: Difficult · Platformer · Action