Games like TAD: That Alien Dude
Games like TAD: That Alien Dude include Vampire Survivors, Touhou Mystia's Izakaya, Touhou Endless Dream, Pizza Tower, and UFO 50. We matched them by the tags players give TAD: That Alien Dude on Steam (Aliens, Cartoon, Cartoony, Casual, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · Roguelite · Indie

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · RPG

Touhou Endless Dream
Shared: Casual · Cartoon · Cartoony

Pizza Tower
Shared: Cartoony · Indie · Pixel Graphics

UFO 50
Shared: Pixel Graphics · Indie · 2D

Cookie Clicker
Shared: Casual · Pixel Graphics · Indie

Kaze and the Wild Masks
Shared: Cartoony · 1990's · Casual

CHUCHEL
Shared: Casual · Cartoon · Cartoony

Poker Night at the Inventory
Shared: Casual · Cartoon · Cartoony

DAVE THE DIVER
Shared: Pixel Graphics · Casual · RPG

There Is No Game: Wrong Dimension
Shared: Indie · Pixel Graphics · Casual

Timberman
Shared: Casual · Pixel Graphics · Indie

Stardew Valley
Shared: Pixel Graphics · Indie · RPG

Cuphead
Shared: Cartoon · Indie · Cartoony

Razortron 2000
Shared: Casual · Indie · 1980s

Slots & Daggers
Shared: Casual · 1990's · Pixel Graphics

Boneraiser Minions
Shared: Pixel Graphics · Roguelite · Indie

Death Must Die
Shared: Pixel Graphics · Roguelite · Casual

Undertale
Shared: Pixel Graphics · Indie · RPG

Mewgenics
Shared: Roguelite · Cartoony · Indie

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Casual · 2D · Pixel Graphics

Skul: The Hero Slayer
Shared: Indie · Pixel Graphics · Roguelite

Montaro
Shared: Casual · Pixel Graphics · Indie

Melvor Idle
Shared: Casual · Indie · RPG