Games like BorderCollie Blaster
Games like BorderCollie Blaster include Broforce, Huntdown, METAL SLUG, Hitler is my crush, and Stick Fight: The Game. We matched them by the tags players give BorderCollie Blaster on Steam (Shoot 'Em Up, Side Scroller, Shooter, 2D Fighter, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · 2D · Shooter

Huntdown
Shared: Side Scroller · Shooter · Shoot 'Em Up

METAL SLUG
Shared: Side Scroller · Shoot 'Em Up · 2D

Hitler is my crush
Shared: Side Scroller · Shoot 'Em Up · Shooter

Stick Fight: The Game
Shared: 2D Fighter · Funny · Action

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Female Protagonist · Action

DRAINUS
Shared: Shoot 'Em Up · Shooter · Action

Your Only Move Is HUSTLE
Shared: 2D Fighter · Action · 2D

Neptunia Shooter
Shared: Shoot 'Em Up · Action · Cute

Guns, Gore & Cannoli
Shared: Side Scroller · Shoot 'Em Up · 2D

Alex Jones: NWO Wars
Shared: Shooter · Shoot 'Em Up · Side Scroller

Guns, Gore and Cannoli 2
Shared: Side Scroller · Shoot 'Em Up · Action

Muse Dash
Shared: Female Protagonist · Cute · 2D

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Shooter · Action

Mirage Feathers
Shared: Shoot 'Em Up · Cute · Shooter

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · 2D

pureya
Shared: 2D · Side Scroller · Casual

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · Female Protagonist · 2D

ICEY
Shared: Side Scroller · Female Protagonist · Action

METAL SLUG 2
Shared: Side Scroller · Shoot 'Em Up · 2D

Blazing Chrome
Shared: Side Scroller · Shoot 'Em Up · Action

Black Market of Bulletphilia ~ 100th Black Market.
Shared: Shoot 'Em Up · Shooter · Female Protagonist

METAL SLUG 3
Shared: Side Scroller · Shooter · Action

METAL SLUG X
Shared: Shoot 'Em Up · Action · 2D