Games like Alien Protection
Games like Alien Protection include Vampire Survivors, Megabonk, BALL x PIT, Skul: The Hero Slayer, and Rogue Legacy. We matched them by the tags players give Alien Protection on Steam (Action, Combat, Arcade, Sandbox, and Casual): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Action Roguelike · Action · Arcade
Megabonk
Shared: Roguelike · Action · Action Roguelike
BALL x PIT
Shared: Action · Arcade · Roguelike
Skul: The Hero Slayer
Shared: Action · Roguelike · Action Roguelike
Rogue Legacy
Shared: Action · Roguelike · Action Roguelike
Garry's Mod
Shared: Sandbox · Casual · Singleplayer
Brotato
Shared: Roguelike · Action Roguelike · Singleplayer
Crab Champions
Shared: Arcade · Roguelike · Action Roguelike
Terraria
Shared: Sandbox · 2D · Survival
Risk of Rain 2
Shared: Action · Roguelike · Action Roguelike
Battlefield™ 6
Shared: Action · Combat · Shooter
Rocket Rats
Shared: Casual · Action · Action Roguelike
Rogue Legacy 2
Shared: Arcade · Action · Roguelike
METAL SLUG
Shared: Action · Arcade · Side Scroller
Battlefield™ 2042
Shared: Action · Shooter · Combat
Planes, Bullets and Vodka
Shared: Action · Casual · Arcade
Grand Theft Auto V Legacy
Shared: Action · Shooter · Sandbox
METAL SLUG 3
Shared: Action · Arcade · Side Scroller
Dome Keeper
Shared: Action · Combat · Roguelike
Broforce
Shared: Action · 2D · Shooter
MARVEL Tōkon: Fighting Souls
Shared: Action · Arcade · Casual
Noita
Shared: Roguelike · Sandbox · Action
Project Lazarus
Shared: Action · Casual · Arcade
Terminator 2D: NO FATE
Shared: Action · Arcade · Side Scroller