Games like Weird Wormholes
Games like Weird Wormholes include Potion Craft: Alchemist Simulator, Cookie Clicker, Vanguard Galaxy, Terraria, and Spaceflight Simulator. We matched them by the tags players give Weird Wormholes on Steam (Casual, Sandbox, Space Sim, Exploration, and Idler): closest matches first, and among equally close ones the better-known games.

Potion Craft: Alchemist Simulator
Shared: Crafting · Sandbox · Casual

Cookie Clicker
Shared: Casual · Idler · Economy

Vanguard Galaxy
Shared: Casual · Sandbox · Idler

Terraria
Shared: Sandbox · 2D · Exploration

Spaceflight Simulator
Shared: Sandbox · Space Sim · Exploration

Starbound
Shared: Sandbox · Crafting · Exploration

DAVE THE DIVER
Shared: Casual · Exploration · Management

A Game About Digging A Hole
Shared: Sandbox · Exploration · Mining

Game Dev Tycoon
Shared: Casual · Management · 2D

Keep on Mining!
Shared: Casual · Idler · Mining

Melvor Idle
Shared: Casual · Idler · 2D

Avorion
Shared: Sandbox · Space Sim · Exploration

Factorio
Shared: Sandbox · Crafting · Casual

X4: Foundations
Shared: Space Sim · Sandbox · Exploration

Digseum
Shared: Casual · Idler · Management

No Man's Sky
Shared: Exploration · Sandbox · Space

SpaceEngine
Shared: Casual · Sandbox · Space Sim

Kerbal Space Program
Shared: Sandbox · Space Sim · Exploration

Shelldiver
Shared: Casual · Idler · 2D

Solar 2
Shared: Casual · Sandbox · 2D

Keplerth
Shared: Sandbox · Exploration · Casual

Elite Dangerous
Shared: Space Sim · Exploration · Sandbox

A Game About Feeding A Black Hole
Shared: Casual · Idler · 2D

Barn Finders
Shared: Casual · Exploration · Sandbox