Games like Top Gang
Games like Top Gang include Spelunky 2, Warhammer 40,000: Shootas, Blood & Teef, Alex Jones: NWO Wars, Geometry Dash, and Kero Blaster. We matched them by the tags players give Top Gang on Steam (Difficult, Side Scroller, Shoot 'Em Up, 2D Platformer, and Creature Collector): closest matches first, and among equally close ones the better-known games.

Spelunky 2
Shared: Difficult · 2D Platformer · Platformer

Warhammer 40,000: Shootas, Blood & Teef
Shared: Side Scroller · PvP · 2D Platformer

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

Geometry Dash
Shared: Difficult · Platformer · Side Scroller

Kero Blaster
Shared: Side Scroller · Difficult · Shoot 'Em Up

Cuphead
Shared: Difficult · Platformer · Shoot 'Em Up

Pizza Tower
Shared: 2D Platformer · Platformer · Funny

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

Broforce
Shared: Side Scroller · Platformer · Action

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

Super Meat Boy
Shared: Difficult · 2D Platformer · Platformer

Rogue Legacy 2
Shared: Difficult · Arcade · Platformer

Rise & Shine
Shared: Side Scroller · 2D Platformer · Difficult

Celeste
Shared: Difficult · 2D Platformer · Platformer

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

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

Soda Crisis
Shared: Side Scroller · Shoot 'Em Up · Shooter

Super Time Force Ultra
Shared: Side Scroller · 2D Platformer · Shoot 'Em Up

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

Pogostuck: Rage With Your Friends
Shared: Difficult · Side Scroller · Platformer

Contra Anniversary Collection
Shared: Side Scroller · Difficult · Shooter

Shovel Knight: Treasure Trove
Shared: Platformer · Difficult · Side Scroller

Airscape - The Fall of Gravity
Shared: Difficult · Shoot 'Em Up · Platformer

METAL SLUG
Shared: Side Scroller · Shoot 'Em Up · Arcade