Games like Harvest Reaper
Games like Harvest Reaper include Vampire Survivors, Hades, Death Must Die, Halls of Torment, and Hades II. We matched them by the tags players give Harvest Reaper on Steam (Hand-drawn, Abstract, Roguelite, Bullet Hell, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Roguelite · Bullet Hell · Action Roguelike

Hades
Shared: Roguelite · Hack and Slash · Action

Death Must Die
Shared: Roguelite · Bullet Hell · Hack and Slash

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

Hades II
Shared: Roguelite · Action · Hack and Slash

Megabonk
Shared: Roguelite · Bullet Hell · Action Roguelike

Tower of Babel: Survivors of Chaos
Shared: Roguelite · Bullet Hell · Hack and Slash

Soulstone Survivors
Shared: Roguelite · Bullet Hell · Action Roguelike

BALL x PIT
Shared: Roguelite · Bullet Hell · Action

Dead Cells
Shared: Roguelite · Hack and Slash · Action Roguelike

Magicraft
Shared: Roguelite · Bullet Hell · Action Roguelike

Brotato
Shared: Bullet Hell · Roguelite · Roguelike

Deep Rock Galactic: Survivor
Shared: Roguelite · Bullet Hell · Procedural Generation

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

Moonlighter
Shared: Roguelite · Hack and Slash · Procedural Generation

Realm of Ink
Shared: Roguelite · Stylized · Hack and Slash

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

Star of Providence
Shared: Roguelite · Bullet Hell · Action

Shape of Dreams
Shared: Roguelite · Hack and Slash · Action Roguelike

The Binding of Isaac
Shared: Procedural Generation · Action Roguelike · Action

Nuclear Throne
Shared: Bullet Hell · Roguelite · Action Roguelike

Cinderia
Shared: Roguelite · Hack and Slash · Action

Nordic Ashes: Survivors of Ragnarok
Shared: Bullet Hell · Roguelite · Action Roguelike

Cultivation Story: Reincarnation
Shared: Roguelite · Bullet Hell · Action