Games like ArenaMania
Games like ArenaMania include Vampire Survivors, Skul: The Hero Slayer, The Binding of Isaac: Rebirth, Timberman, and UFO 50. We matched them by the tags players give ArenaMania on Steam (Arena Shooter, Indie, Action, Casual, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Indie · Action Roguelike · 2D

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

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

Timberman
Shared: Indie · Casual · Action

UFO 50
Shared: Indie · Action · 2D

Downwell
Shared: Indie · Action · Action Roguelike

Nuclear Throne
Shared: Indie · Action Roguelike · Action

Hotline Miami
Shared: Action · Indie · Pixel Graphics

Hotline Miami 2: Wrong Number
Shared: Action · Difficult · Indie

A Dance of Fire and Ice
Shared: Indie · Difficult · 2D

Trip to Vinelands
Shared: Indie · Action · Casual

Cyberhunt
Shared: Indie · Action · Casual

Megabonk
Shared: Indie · Action Roguelike · Action

Shovel Knight: Treasure Trove
Shared: Indie · Action · Retro

Enter the Gungeon
Shared: Indie · Action Roguelike · Difficult

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

BALL x PIT
Shared: Action · Top-Down Shooter · Arcade

Devil Daggers
Shared: Indie · Action · Difficult

SANABI
Shared: Action · Indie · Pixel Graphics

SNKRX
Shared: Arena Shooter · Top-Down Shooter · Action Roguelike

Dungreed
Shared: Action · Indie · Action Roguelike

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

Noita
Shared: Indie · Difficult · 2D

Kung Fury: Street Rage - Ultimate Edition
Shared: Indie · Action · Arcade