Games like Cyber Bay
Games like Cyber Bay include Anomaly Agent, Skul: The Hero Slayer, ICEY, Hades, and BlazBlue Entropy Effect. We matched them by the tags players give Cyber Bay on Steam (Action Roguelike, Side Scroller, Hack and Slash, Shoot 'Em Up, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Anomaly Agent
Shared: Side Scroller · Action Roguelike · 2D Platformer

Skul: The Hero Slayer
Shared: Action Roguelike · Action · Side Scroller

ICEY
Shared: Hack and Slash · Side Scroller · Female Protagonist

Hades
Shared: Action Roguelike · Hack and Slash · Action

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · Hack and Slash

Hades II
Shared: Hack and Slash · Action Roguelike · Action

Dead Cells
Shared: Action Roguelike · Hack and Slash · Adventure

Lost Castle
Shared: Action Roguelike · Side Scroller · Hack and Slash

30XX
Shared: Action Roguelike · Side Scroller · 2D Platformer

Bright Memory
Shared: Hack and Slash · Female Protagonist · Shooter

Hero Siege
Shared: Action Roguelike · Hack and Slash · Pixel Graphics

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

Afterimage
Shared: Side Scroller · 2D Platformer · Female Protagonist

Stellar Blade™
Shared: Hack and Slash · Female Protagonist · Action

The Vagrant
Shared: Side Scroller · Female Protagonist · Hack and Slash

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

The Last Stand: Aftermath
Shared: Action Roguelike · Post-apocalyptic · Shooter

The Final Station
Shared: Post-apocalyptic · Pixel Graphics · Action

Have a Nice Death
Shared: Action Roguelike · Hack and Slash · 2D Platformer

BPM: BULLETS PER MINUTE
Shared: Rhythm · Action Roguelike · Shooter

Oblivion Override
Shared: Action Roguelike · Side Scroller · Hack and Slash

Killing Floor 2
Shared: Hack and Slash · Zombies · Shooter

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

20XX
Shared: Action Roguelike · 2D Platformer · Action