Games like The Neeblarium
Games like The Neeblarium include Tiny Pasture, Horsey Game, WorldBox - God Simulator, The Sapling, and Planetary Life. We matched them by the tags players give The Neeblarium on Steam (Idler, Creature Collector, Sandbox, Nature, and Science): closest matches first, and among equally close ones the better-known games.

Tiny Pasture
Shared: Idler · Creature Collector · Cute

Horsey Game
Shared: Creature Collector · Sandbox · Life Sim

WorldBox - God Simulator
Shared: Sandbox · God Game · Life Sim

The Sapling
Shared: Sandbox · Nature · Science

Planetary Life
Shared: Sandbox · God Game · Science

SPORE™
Shared: Sandbox · God Game · Science

Rusty's Retirement
Shared: Idler · Management · Nature

MyVoiceZoo
Shared: Creature Collector · Sandbox · Idler

Planet Zoo
Shared: Management · Sandbox · Nature

Shelldiver
Shared: Idler · Management · 2D

Cornerpond
Shared: Idler · Creature Collector · Nature

Chillquarium
Shared: Creature Collector · Idler · Nature

Bobo Bay
Shared: Creature Collector · Sandbox · Management

Stardew Valley
Shared: Life Sim · Sandbox · Relaxing

Cast n Chill
Shared: Idler · Creature Collector · Relaxing

Digseum
Shared: Idler · Management · Casual

Birdwatching Notebook
Shared: Idler · Creature Collector · Nature

Tiny Aquarium: Social Fishkeeping
Shared: Creature Collector · Idler · Management

Bugtopia
Shared: Idler · Creature Collector · Nature

Tiny Glade
Shared: Sandbox · Relaxing · Nature

Sandboxels
Shared: Sandbox · Science · Nature

Moonstone Island
Shared: Creature Collector · Sandbox · 2D

Universe Sandbox
Shared: Sandbox · Science · God Game

Mushroom Nook
Shared: Idler · Creature Collector · Sandbox