Games like Undead Onslaught
Games like Undead Onslaught include Vampire Survivors, Halls of Torment, Death Must Die, The Binding of Isaac: Rebirth, and Realm of the Mad God Exalt. We matched them by the tags players give Undead Onslaught on Steam (Bullet Hell, Action Roguelike, Pixel Graphics, Roguelike, and RPG): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Pixel Graphics
Halls of Torment
Shared: Action Roguelike · Bullet Hell · Pixel Graphics
Death Must Die
Shared: Bullet Hell · Action Roguelike · Pixel Graphics
The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Pixel Graphics
Realm of the Mad God Exalt
Shared: Pixel Graphics · Bullet Hell · Roguelike
Enter the Gungeon
Shared: Bullet Hell · Action Roguelike · Pixel Graphics
Hero Siege
Shared: Pixel Graphics · Action Roguelike · RPG
Megabonk
Shared: Action Roguelike · Roguelike · Bullet Hell
Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Roguelike
Skul: The Hero Slayer
Shared: Action Roguelike · Pixel Graphics · Roguelike
Seraph's Last Stand
Shared: Bullet Hell · Action Roguelike · Pixel Graphics
Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelike
Dead Cells
Shared: Action Roguelike · Roguelike · Pixel Graphics
Boneraiser Minions
Shared: Bullet Hell · Action Roguelike · Pixel Graphics
Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike
Dungreed
Shared: Action Roguelike · Pixel Graphics · Roguelike
Wizard of Legend
Shared: Action Roguelike · Pixel Graphics · Roguelike
Noobs Want to Live
Shared: Bullet Hell · Pixel Graphics · Roguelike
The Binding of Isaac
Shared: Action Roguelike · Roguelike · Dark
BALL x PIT
Shared: Bullet Hell · Action Roguelike · Roguelike
Heroes of Hammerwatch II
Shared: Action Roguelike · RPG · Roguelike
Streets of Rogue
Shared: Action Roguelike · Pixel Graphics · RPG
Rogue Legacy
Shared: Action Roguelike · Roguelike · RPG
Brotato
Shared: Bullet Hell · Roguelike · Action Roguelike