Games like Helix
Games like Helix include Skul: The Hero Slayer, Vampire Survivors, Enter the Gungeon, The Binding of Isaac: Rebirth, and Hotline Miami. We matched them by the tags players give Helix on Steam (Shooter, Action, Action Roguelike, 2D, and Top-Down): closest matches first, and among equally close ones the better-known games.

Skul: The Hero Slayer
Shared: Action · Action Roguelike · 2D

Vampire Survivors
Shared: Action Roguelike · 2D · Pixel Graphics

Enter the Gungeon
Shared: Action Roguelike · Pixel Graphics · Indie

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Pixel Graphics · Indie

Hotline Miami
Shared: Action · Top-Down · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Action

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

Broforce
Shared: Action · 2D · Pixel Graphics

UnderMine
Shared: Action Roguelike · Pixel Graphics · Action

Dungreed
Shared: Action Roguelike · Action · Pixel Graphics

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

Battlefield™ 2042
Shared: Shooter · Action · Singleplayer

Sephiria
Shared: Action Roguelike · Action · Pixel Graphics

Rogue Legacy
Shared: Action Roguelike · Action · 2D

BALL x PIT
Shared: Action · Action Roguelike · Pixel Graphics

The Binding of Isaac
Shared: Action Roguelike · Action · Indie

Halls of Torment
Shared: Action Roguelike · Pixel Graphics · Action

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Top-Down

Risk of Rain (2013)
Shared: Action Roguelike · Action · Pixel Graphics

Dead Cells
Shared: Action Roguelike · 2D · Pixel Graphics

Rocket Rats
Shared: Action Roguelike · Pixel Graphics · 2D

Titanfall® 2
Shared: Shooter · Action · Singleplayer

Pixel Gun 3D: PC Edition
Shared: Shooter · Action · Pixel Graphics

Star of Providence
Shared: Action Roguelike · Action · Pixel Graphics