Games like The Acorn Bounty
Games like The Acorn Bounty include SANABI, Shovel Knight: Treasure Trove, Celeste, Hollow Knight, and Super Meat Boy. We matched them by the tags players give The Acorn Bounty on Steam (Platformer, 2D, Action-Adventure, Difficult, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Pixel Graphics · 2D · Platformer

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · 2D

Celeste
Shared: Difficult · Platformer · Pixel Graphics

Hollow Knight
Shared: Platformer · Difficult · 2D

Super Meat Boy
Shared: Platformer · Difficult · 2D

Skul: The Hero Slayer
Shared: 2D · Pixel Graphics · Platformer

Hollow Knight: Silksong
Shared: Difficult · 2D · Platformer

The Messenger
Shared: Platformer · 2D · Pixel Graphics

Jump King
Shared: Difficult · Platformer · Pixel Graphics

BlazBlue Entropy Effect
Shared: 2D · Platformer · Action-Adventure

Cuphead
Shared: Platformer · Difficult · 2D

Katana ZERO
Shared: Platformer · Pixel Graphics · 2D

Out There Somewhere
Shared: Platformer · Pixel Graphics · 2D

VVVVVV
Shared: Platformer · Pixel Graphics · Difficult

Bloodstained: Curse of the Moon
Shared: Platformer · 2D · Pixel Graphics

Geometry Dash
Shared: Difficult · 2D · Platformer

Sonic Mania
Shared: 2D · Platformer · Pixel Graphics

Rogue Legacy
Shared: Platformer · 2D · Singleplayer

UFO 50
Shared: 2D · Pixel Graphics · Retro

Rain World
Shared: Difficult · Platformer · 2D

Dust: An Elysian Tail
Shared: Platformer · 2D · Action

Downwell
Shared: Platformer · Pixel Graphics · 2D

Angry Video Game Nerd Adventures
Shared: Platformer · Difficult · Pixel Graphics

Blasphemous
Shared: Pixel Graphics · 2D · Difficult