Games like Skyward Descent
Games like Skyward Descent include Vampire Survivors, Deep Rock Galactic: Survivor, Nova Drift, Halls of Torment, and Rogue: Genesia. We matched them by the tags players give Skyward Descent on Steam (Roguelite, Bullet Hell, Action Roguelike, Perma Death, and Stylized): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Roguelite · Action Roguelike

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Roguelite · Bullet Hell

Nova Drift
Shared: Bullet Hell · Roguelite · Action Roguelike

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

Rogue: Genesia
Shared: Bullet Hell · Roguelite · Action Roguelike

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

Roboquest
Shared: Roguelite · Action Roguelike · Shooter

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

Hades
Shared: Roguelite · Action Roguelike · Indie

Windowkill
Shared: Action Roguelike · Bullet Hell · Arcade

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

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelite

Pass the Fear
Shared: Roguelite · Action Roguelike · Bullet Hell

Soulstone Survivors
Shared: Roguelite · Action Roguelike · Bullet Hell

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

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

Glyphica: Typing Survival
Shared: Action Roguelike · Bullet Hell · Roguelite

Crab Champions
Shared: Action Roguelike · Bullet Hell · Arcade

Boneraiser Minions
Shared: Bullet Hell · Action Roguelike · Roguelite

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

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelite

Slime 3K: Rise Against Despot
Shared: Bullet Hell · Action Roguelike · Roguelite

Shape of Dreams
Shared: Action Roguelike · Roguelite · PvE

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