Games like Gravemaw
Games like Gravemaw include Vampire Survivors, Skul: The Hero Slayer, Halls of Torment, The Binding of Isaac: Rebirth, and Downwell. We matched them by the tags players give Gravemaw on Steam (Action Roguelike, Action, Roguelite, 2D Platformer, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Roguelite · Pixel Graphics

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

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

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

Downwell
Shared: Action Roguelike · Pixel Graphics · Action

Dead Cells
Shared: Action Roguelike · Pixel Graphics · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

Rogue Legacy
Shared: Action Roguelike · Action · Indie

Dungreed
Shared: Action Roguelike · Roguelite · Action

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

Megabonk
Shared: Action Roguelike · Roguelite · Action

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

Rogue Legacy 2
Shared: Action · Arcade · Roguelite

BALL x PIT
Shared: Action · Roguelite · Action Roguelike

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · Pixel Graphics

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

Celeste
Shared: Pixel Graphics · 2D Platformer · Difficult

Caveblazers
Shared: Action Roguelike · Roguelite · Pixel Graphics

Death Must Die
Shared: Action Roguelike · Roguelite · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Action

Super Meat Boy
Shared: 2D Platformer · Pixel Graphics · Indie

UnderMine
Shared: Action Roguelike · Roguelite · Pixel Graphics

Noita
Shared: Pixel Graphics · Difficult · Action Roguelike

Blasphemous
Shared: Pixel Graphics · Dark Fantasy · Action