Games like Sole Saga
Games like Sole Saga include Vampire Survivors, Enter the Gungeon, Megabonk, The Binding of Isaac: Rebirth, and Skul: The Hero Slayer. We matched them by the tags players give Sole Saga on Steam (Action Roguelike, Bullet Hell, Difficult, Roguelite, and PvE): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

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

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Nuclear Throne
Shared: Action Roguelike · Difficult · Bullet Hell

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Hades
Shared: Action Roguelike · Roguelite · Roguelike

Dungreed
Shared: Action Roguelike · Roguelite · Roguelike

BALL x PIT
Shared: Bullet Hell · Roguelite · Action Roguelike

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Difficult

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Noita
Shared: Difficult · Roguelike · Action Roguelike

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

Rogue Legacy
Shared: Action Roguelike · Roguelike · 2D

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