Games like Abandoned City
Games like Abandoned City include Escape From Duckov, ZERO Sievert, Vampire Survivors, Nuclear Throne, and Relic Hunters Zero: Remix. We matched them by the tags players give Abandoned City on Steam (Looter Shooter, Bullet Hell, Top-Down Shooter, Action, and Shooter): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Looter Shooter · Action · Top-Down Shooter

ZERO Sievert
Shared: Looter Shooter · Shooter · Post-apocalyptic

Vampire Survivors
Shared: Bullet Hell · 2D · Action

Nuclear Throne
Shared: Bullet Hell · Action · Top-Down Shooter

Relic Hunters Zero: Remix
Shared: Looter Shooter · Top-Down Shooter · Action

BALL x PIT
Shared: Action · Bullet Hell · Top-Down Shooter

Enter the Gungeon
Shared: Bullet Hell · Indie · Action

The Last Stand: Aftermath
Shared: Top-Down Shooter · Shooter · Post-apocalyptic

Planes, Bullets and Vodka
Shared: Action · Bullet Hell · Shooter

Hotline Miami
Shared: Action · Top-Down · Indie

Angel at Dusk
Shared: Bullet Hell · Action · Shooter

Tom Clancy’s The Division™
Shared: Looter Shooter · Action · Shooter

Rocket Rats
Shared: Bullet Hell · Action · 2D

12 is Better Than 6
Shared: Action · Top-Down Shooter · Shooter

Bit Blaster XL
Shared: Bullet Hell · Shooter · Action

20 Minutes Till Dawn
Shared: Bullet Hell · Top-Down Shooter · Survival

The Final Station
Shared: 2D · Action · Post-apocalyptic

FatalZone
Shared: Bullet Hell · Top-Down Shooter · Action

LUFTRAUSERS
Shared: Bullet Hell · Action · 2D

Broforce
Shared: Action · 2D · Shooter

Hotline Miami 2: Wrong Number
Shared: Action · Top-Down · Top-Down Shooter

Roboquest
Shared: Shooter · Looter Shooter · Bullet Hell

Borderlands 2
Shared: Action · Shooter · Looter Shooter

Gem Defender: Soyjak Survivors
Shared: Bullet Hell · Action · Shooter