Games like Wisterix
Games like Wisterix include Nuclear Throne, Vampire Survivors, Enter the Gungeon, The Binding of Isaac: Rebirth, and Megabonk. We matched them by the tags players give Wisterix on Steam (Indie, Action Roguelike, Top-Down Shooter, Bullet Hell, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Nuclear Throne
Shared: Action Roguelike · Indie · Pixel Graphics

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Indie

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Indie

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

Megabonk
Shared: Action Roguelike · Indie · Bullet Hell

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

Skul: The Hero Slayer
Shared: Indie · Action Roguelike · Pixel Graphics

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

Noita
Shared: Pixel Graphics · Indie · Roguelike

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Death Must Die
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

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

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

Hades
Shared: Action Roguelike · Indie · Roguelite

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Indie

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

SYNTHETIK: Legion Rising
Shared: Indie · Top-Down Shooter · Action Roguelike

Dungreed
Shared: Action Roguelike · Pixel Graphics · Indie

Noobs Want to Live
Shared: Bullet Hell · Pixel Graphics · Action Roguelike

Brotato
Shared: Action Roguelike · Bullet Hell · Roguelike

Blazing Beaks
Shared: Action Roguelike · Top-Down Shooter · Pixel Graphics

Star of Providence
Shared: Action Roguelike · Bullet Hell · Indie

UnderMine
Shared: Action Roguelike · Indie · Pixel Graphics

Streets of Rogue
Shared: Action Roguelike · Pixel Graphics · Indie