Games like Metal Slug: Awakening
Games like Metal Slug: Awakening include Warhammer 40,000: Shootas, Blood & Teef, Insect Swarm, Commando Collection, Brawlhalla, and Contra: Operation Galuga. We matched them by the tags players give Metal Slug: Awakening on Steam (Shoot 'Em Up, 2D Platformer, Arcade, Twin Stick Shooter, and Beat 'em up): closest matches first, and among equally close ones the better-known games.

Warhammer 40,000: Shootas, Blood & Teef
Shared: 2D Platformer · Shoot 'Em Up · Twin Stick Shooter

Insect Swarm
Shared: Shoot 'Em Up · Shooter · Twin Stick Shooter

Commando Collection
Shared: Arcade · Beat 'em up · Shooter

Brawlhalla
Shared: 2D Platformer · Casual · Platformer

Contra: Operation Galuga
Shared: Arcade · 2D Platformer · Shoot 'Em Up

Alex Jones: NWO Wars
Shared: Arcade · 2D Platformer · Shoot 'Em Up

RIVE
Shared: Shoot 'Em Up · Arcade · 2D Platformer

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Shooter

Cyberhunt
Shared: Shoot 'Em Up · Twin Stick Shooter · Arcade

Rogue Legacy 2
Shared: Arcade · Platformer · Action

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Casual · Arcade

Nitro Express
Shared: 2D Platformer · Beat 'em up · Shooter

Sonic Superstars
Shared: 2D Platformer · Platformer · Casual

Sonic Origins
Shared: 2D Platformer · Action · Platformer

Tribal Hunter
Shared: 2D Platformer · Casual · Platformer

Geometry Wars: Retro Evolved
Shared: Arcade · Twin Stick Shooter · Shoot 'Em Up

Alien Hominid Invasion
Shared: Shoot 'Em Up · Arcade · Casual

Rise & Shine
Shared: 2D Platformer · Shoot 'Em Up · Twin Stick Shooter

Downwell
Shared: Arcade · 2D Platformer · Platformer

Trine 5: A Clockwork Conspiracy
Shared: 2D Platformer · Platformer · RPG

Beat Hazard
Shared: Shoot 'Em Up · Twin Stick Shooter · Arcade

Waves
Shared: Shoot 'Em Up · Twin Stick Shooter · Arcade

Trine 2: Complete Story
Shared: 2D Platformer · Platformer · Action-Adventure

Airscape - The Fall of Gravity
Shared: Shoot 'Em Up · Arcade · Casual