Games like Alterhavoc
Games like Alterhavoc include Vampire Survivors, Death Must Die, Skul: The Hero Slayer, Megabonk, and Halls of Torment. We matched them by the tags players give Alterhavoc on Steam (Action, Puzzle, Action Roguelike, Bullet Hell, and Roguelite): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite
Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite
Skul: The Hero Slayer
Shared: Action · Action Roguelike · Pixel Graphics
Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell
Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite
BALL x PIT
Shared: Action · Roguelite · Bullet Hell
Nuclear Throne
Shared: Action Roguelike · Action · Bullet Hell
20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite
Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Pixel Graphics
Dungreed
Shared: Action Roguelike · Action · Roguelite
Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite
Sephiria
Shared: Action Roguelike · Roguelite · Action
Realm of the Mad God Exalt
Shared: Bullet Hell · Pixel Graphics · Action Roguelike
UnderMine
Shared: Action Roguelike · Roguelite · Action
Hades
Shared: Action Roguelike · Roguelite · Action
BlazBlue Entropy Effect
Shared: Action · Action Roguelike · 2D
Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Action
Star of Providence
Shared: Action Roguelike · Bullet Hell · Roguelite
Atomicrops
Shared: Action · Bullet Hell · Action Roguelike
Rogue Legacy
Shared: Action · Action Roguelike · 2D
Dead Cells
Shared: Action Roguelike · 2D · Roguelite
The Binding of Isaac: Rebirth
Shared: Action Roguelike · Pixel Graphics · Indie
ScourgeBringer
Shared: Action · Roguelite · Action Roguelike
Rocket Rats
Shared: Action Roguelike · Bullet Hell · Pixel Graphics