Games like AlphaLink
Games like AlphaLink include Broforce, Huntdown, METAL SLUG 3, METAL SLUG, and Contra: Operation Galuga. We matched them by the tags players give AlphaLink on Steam (Action, Arcade, Platformer, Shooter, and Arena Shooter): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Platformer · 2D

Huntdown
Shared: Action · Shooter · Side Scroller

METAL SLUG 3
Shared: Arcade · Action · Side Scroller

METAL SLUG
Shared: Action · Arcade · Side Scroller

Contra: Operation Galuga
Shared: Action · Arcade · Platformer

Geometry Dash
Shared: 2D · Platformer · Colorful

Sonic Mania
Shared: Platformer · 2D · Action

Rogue Legacy 2
Shared: Arcade · Action · Platformer

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

Soda Crisis
Shared: Action · Side Scroller · Shooter

Nine Sols
Shared: Action · Platformer · 2D

Strike Force Heroes
Shared: Action · Shooter · Arena Shooter

Hollow Knight
Shared: Platformer · 2D · Atmospheric

Mark of the Ninja
Shared: Platformer · Action · 2D

Contra Anniversary Collection
Shared: Action · Side Scroller · Platformer

Nova Drift
Shared: Arcade · Arena Shooter · Shooter

My Friend Pedro
Shared: Action · Shooter · Platformer

METAL SLUG XX
Shared: Action · Arcade · Shooter

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

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

Kero Blaster
Shared: Platformer · Side Scroller · Arcade

Terminator 2D: NO FATE
Shared: Arcade · Action · Side Scroller

Zombotron
Shared: Action · 2D · Shooter

Sonic the Hedgehog 4 Episode 1
Shared: Action · Platformer · 2D