Games like METAL SLUG 2
Games like METAL SLUG 2 include METAL SLUG, METAL SLUG 3, Broforce, METAL SLUG X, and Sonic Mania. We matched them by the tags players give METAL SLUG 2 on Steam (Action, Arcade, 2D, Side Scroller, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

METAL SLUG
Shared: Action · Arcade · 2D

METAL SLUG 3
Shared: Arcade · Action · Side Scroller

Broforce
Shared: Action · 2D · Multiplayer

METAL SLUG X
Shared: Action · Arcade · 2D

Sonic Mania
Shared: 2D · Retro · Action

Huntdown
Shared: Action · Side Scroller · 2D

Streets of Rage 4
Shared: Action · 2D · Arcade

Cuphead
Shared: 2D · Local Co-Op · Multiplayer

Contra Anniversary Collection
Shared: Action · Side Scroller · 2D

METAL SLUG XX
Shared: Action · 2D · Arcade

Guns, Gore and Cannoli 2
Shared: Action · Side Scroller · 2D

Blazing Chrome
Shared: Action · Retro · Side Scroller

Duck Game
Shared: Action · Multiplayer · 2D

Guns, Gore & Cannoli
Shared: Action · 2D · Side Scroller

Fight'N Rage
Shared: Action · 2D · Arcade

Shovel Knight: Treasure Trove
Shared: 2D · Retro · Action

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Side Scroller · 2D · Multiplayer

Capcom Beat 'Em Up Bundle
Shared: Arcade · Action · Retro

THE KING OF FIGHTERS 2002 UNLIMITED MATCH
Shared: Action · Arcade · Multiplayer

PAC-MAN 256
Shared: Action · Arcade · Retro

Ikaruga
Shared: Arcade · Action · Shoot 'Em Up

BattleBlock Theater®
Shared: 2D · Multiplayer · Co-op

ZeroRanger
Shared: Action · Shoot 'Em Up · Arcade

PARTICLE MACE
Shared: Action · Arcade · 2D