Games like Hollowroot
Games like Hollowroot include Vampire Survivors, Skul: The Hero Slayer, Death Must Die, Dead Cells, and Rogue Legacy. We matched them by the tags players give Hollowroot on Steam (Action, RPG, Action Roguelike, 2D Platformer, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

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

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

Dead Cells
Shared: Action Roguelike · Metroidvania · 2D

Rogue Legacy
Shared: Action · Action Roguelike · RPG

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

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

UnderMine
Shared: Action Roguelike · RPG · Action

Hero Siege
Shared: Action Roguelike · RPG · Pixel Graphics

Dust: An Elysian Tail
Shared: Action · RPG · Metroidvania

SANABI
Shared: Action · 2D Platformer · Pixel Graphics

Dungreed
Shared: Action Roguelike · Action · Pixel Graphics

Rogue Legacy 2
Shared: Action · Metroidvania · RPG

Undertale
Shared: RPG · Pixel Graphics · Choices Matter

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Cultivation Story: Reincarnation
Shared: RPG · Action Roguelike · Action

ScourgeBringer
Shared: Action · Action Roguelike · Pixel Graphics

BlazBlue Entropy Effect
Shared: Action · Action Roguelike · 2D

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Streets of Rogue
Shared: Action Roguelike · RPG · Action

Dungeon Munchies
Shared: Action · RPG · Pixel Graphics

Infernax
Shared: Action · RPG · Metroidvania

Nuclear Throne
Shared: Action Roguelike · Action · Bullet Hell

Gestalt: Steam & Cinder
Shared: Action · RPG · Metroidvania