Games like Eyes in the Dark
Games like Eyes in the Dark include Skul: The Hero Slayer, Anomaly Agent, Enter the Gungeon, 30XX, and The Binding of Isaac: Rebirth. We matched them by the tags players give Eyes in the Dark on Steam (Action Roguelike, Side Scroller, Twin Stick Shooter, Roguelite, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

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

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

Enter the Gungeon
Shared: Action Roguelike · Difficult · Twin Stick Shooter

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

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Difficult · Roguelike

Rogue Legacy
Shared: Action Roguelike · Platformer · Roguelike

Dungreed
Shared: Action Roguelike · Roguelite · Roguelike

20XX
Shared: Action Roguelike · Platformer · Roguelite

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

Hades
Shared: Action Roguelike · Roguelite · Roguelike

Risk of Rain 2
Shared: Action Roguelike · Roguelite · Roguelike

Nuclear Throne
Shared: Action Roguelike · Difficult · Roguelite

Risk of Rain (2013)
Shared: Action Roguelike · Platformer · Roguelike

SYNTHETIK: Legion Rising
Shared: Roguelite · Action Roguelike · Twin Stick Shooter

Dead Cells
Shared: Action Roguelike · Roguelite · Roguelike

Super Amazing Wagon Adventure
Shared: Action Roguelike · Side Scroller · Twin Stick Shooter

Caveblazers
Shared: Action Roguelike · Roguelite · Platformer

Spelunky
Shared: Action Roguelike · Platformer · Difficult

Spiritfall
Shared: Action Roguelike · Roguelite · 2D Platformer

暖雪 Warm Snow
Shared: Action Roguelike · Roguelite · Action-Adventure

Rogue Stormers
Shared: Action Roguelike · Side Scroller · Twin Stick Shooter

Lost Castle
Shared: Action Roguelike · Side Scroller · Roguelite

Rogue Legacy 2
Shared: Roguelite · Platformer · Difficult

GoNNER
Shared: Action Roguelike · Roguelite · Platformer