Games like Topworld
Games like Topworld include Vampire Survivors, Hero Siege, Skul: The Hero Slayer, Death Must Die, and Rogue Legacy. We matched them by the tags players give Topworld on Steam (Action, Casual, Indie, RPG, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · Indie · 2D

Hero Siege
Shared: Pixel Graphics · RPG · Action RPG

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

Death Must Die
Shared: RPG · Action · Pixel Graphics

Rogue Legacy
Shared: Indie · Action · 2D

Heroes of Hammerwatch II
Shared: RPG · Action · Action RPG

Halls of Torment
Shared: Action · Pixel Graphics · Action Roguelike

Black Myth: Wukong
Shared: Action · RPG · Action RPG

Noita
Shared: Pixel Graphics · Indie · 2D

UFO 50
Shared: Indie · Action · Pixel Graphics

Sephiria
Shared: Action · Pixel Graphics · RPG

UnderMine
Shared: Action · RPG · Indie

Cat Quest
Shared: RPG · Action · Indie

ATLYSS
Shared: RPG · Action · Action RPG

DAVE THE DIVER
Shared: Casual · Pixel Graphics · RPG

Magicite
Shared: Indie · RPG · 2D

Dungreed
Shared: Action · Pixel Graphics · Indie

Dungeon Munchies
Shared: Action · Indie · Pixel Graphics

Stardew Valley
Shared: Pixel Graphics · RPG · Indie

Streets of Rogue
Shared: Action · RPG · Pixel Graphics

The Mageseeker: A League of Legends Story™
Shared: RPG · 2D · Pixel Graphics

Juicy Realm
Shared: Action · Indie · Casual

The Binding of Isaac: Rebirth
Shared: Indie · Pixel Graphics · Action Roguelike

Melvor Idle
Shared: Casual · RPG · Indie