Games like Metal Slugger Ops
Games like Metal Slugger Ops include METAL SLUG 3, Broforce, Cuphead, METAL SLUG, and Streets of Rage 4. We matched them by the tags players give Metal Slugger Ops on Steam (Action, Arcade, Side Scroller, Retro, and Local Co-Op): closest matches first, and among equally close ones the better-known games.

METAL SLUG 3
Shared: Arcade · Action · Side Scroller

Broforce
Shared: Action · Local Co-Op · 2D

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

METAL SLUG
Shared: Action · Arcade · Side Scroller

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

Huntdown
Shared: Side Scroller · Action · Shooter

METAL SLUG X
Shared: Action · Arcade · Retro

Blazing Chrome
Shared: Action · Retro · Side Scroller

METAL SLUG 2
Shared: Action · Arcade · Side Scroller

Contra Anniversary Collection
Shared: Action · Side Scroller · Retro

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

METAL SLUG XX
Shared: Action · Retro · Arcade

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

Counter-Strike 2
Shared: Action · Shooter · Multiplayer

Door Kickers: Action Squad
Shared: Action · Retro · Local Co-Op

Sonic Mania
Shared: Retro · 2D · Action

Revolution Ace
Shared: Action · Arcade · Local Co-Op

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

BattleBlock Theater®
Shared: Local Co-Op · Platformer · 2D

Kero Blaster
Shared: Side Scroller · Arcade · Shooter

Rogue Legacy 2
Shared: Arcade · Action · Platformer

HELLDIVERS™ 2
Shared: Action · Online Co-Op · Shooter

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Online Co-Op

Alex Jones: NWO Wars
Shared: Action · Arcade · Side Scroller