Games like Area 37
Games like Area 37 include Broforce, SANABI, Shovel Knight: Treasure Trove, Huntdown, and Blazing Chrome. We matched them by the tags players give Area 37 on Steam (Retro, Shooter, Action, Pixel Graphics, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Pixel Graphics · Shooter

SANABI
Shared: Pixel Graphics · Action · Indie

Shovel Knight: Treasure Trove
Shared: Retro · Pixel Graphics · Indie

Huntdown
Shared: Shooter · Pixel Graphics · Action

Blazing Chrome
Shared: Retro · Action · Pixel Graphics

Super Meat Boy
Shared: Pixel Graphics · Indie · Retro

Katana ZERO
Shared: Action · Pixel Graphics · Indie

Hotline Miami 2: Wrong Number
Shared: Pixel Graphics · Action · Retro

UFO 50
Shared: Retro · Pixel Graphics · Action

LUFTRAUSERS
Shared: Action · Indie · Pixel Graphics

Downwell
Shared: Pixel Graphics · Indie · Action

Hotline Miami
Shared: Action · Pixel Graphics · Indie

Pizza Tower
Shared: Indie · Pixel Graphics · Fast-Paced

METAL SLUG
Shared: Action · Retro · Arcade

Sonic Mania
Shared: Retro · Pixel Graphics · Action

Exit the Gungeon
Shared: Action · Indie · Arcade

Bloodstained: Curse of the Moon
Shared: Retro · Action · Pixel Graphics

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

Gravity Circuit
Shared: Action · Pixel Graphics · Indie

The Messenger
Shared: Retro · Pixel Graphics · Action

Terminator 2D: NO FATE
Shared: Pixel Graphics · Action · Shooter

Celeste
Shared: Pixel Graphics · Indie · 2D Platformer

METAL SLUG 3
Shared: Action · Retro · Arcade

Planes, Bullets and Vodka
Shared: Action · Retro · Shooter