Games like Primordia
Primordia. These games share the most with it, and each one says why.

Idle Loops: Squirrel Edition
Also incremental, animals
A reworked Idle Loops with a pet squirrel companion, new zones, new actions and a tutorial.
4.2★ galaxy
3.9★ galaxy
Snail Facts!
Also incremental, animals
Learn facts about snails, then help them conquer the world in a 15-minute incremental.
3.8★ galaxy
3.4★ galaxy
4.6★ galaxy
Garbage GrowthUpdated
Also incremental
Pick up trash that people throw at you, add more polluters and hire rats to automate collection. A short, crude incremental with a skill tree.
91% steam3.9★ galaxy
Budgie's Bug Shop
Also animals
Catch bugs and sell them in a shop staffed by parakeets, buying gear and abilities to grow profits.
4.6★ galaxy
Shelldiver
Also animals
An elderly turtle pilots a submarine to catch jellyfish and salvage ocean junk, selling the haul to upgrade gear and dive into deeper biomes.
98% steam
Ropuka's Idle Island
Also animals
A frog mows grass in a small window on your desktop; spend the clippings on better tools and island decorations.
97% steam90% idle
Birdwatching Notebook
Also animals
A small postcard scene on your desktop draws in dozens of bird species as you decorate the spot, unlock new habitats and photograph visitors.
97% steam90% idle
Leaf it Alone
Also incremental
Clear a yard buried in leaves with a rake, a blower or bare hands, upgrading tools until the slow chore turns fast and the garden comes back to life.
95% steam
The Adventure of NAYU
Also animals
Click to help a fox and her party fight through a gentle, short story, spending star shards on training and costumes, with an endless mode afterward.
95% steamhas ending75% idle
Plantera 2: Golden Acorn
Also animals
Grow a garden around a magic oak with round helpers who harvest for you, even while the game is closed, and reach for golden acorns.
95% steam50% idle
Cheeky Chooks
Also animals
Hatch and keep unique chickens happy for better eggs, and grow a shed into a sprawling ranch through missions and upgrades.
94% steam
How to Train Your Cock
Also animals
A rooster idler that sits on your screen and grows from a chick into a muscled bird while you buy hats, decorate his island and compare size with friends.
94% steam90% idle
Idle Lab Rats
Also animals
Buy rats, train them in mazes and with lab equipment, and submit the best ones for grant money to expand your lab.
4.3★ galaxy
Tiny Pasture
Also animals
A strip of pasture along the bottom of your screen where you raise, breed and sell animals for coins while you work.
92% steam90% idle
Gibbonacci
Also animals
Put a troop of monkeys to work checking numbers to find every one in the Fibonacci sequence.
4.2★ galaxy
The Fly Devourer Tree
Also animals
Evolve a creature built to eat as many flies as possible, progressing through nine layers so far.
4.3★ galaxy
Lazy KickersUpdated
Also incremental
Grow soccer balls from plants and kick them into goals for coins, hiring and assigning players to climb leagues on a desktop-friendly field.
90% steam3.8★ galaxy50% idle
Maltese's Fluffy Onsen
Also animals
Run a bathhouse for animal guests at the bottom of your screen, setting bath temperatures, snacks and staff while you do other things.
94% steam90% idle
Tree Game Rewritten
Also incremental
Grow a tree of upgrades and rebirth to push further, a rewrite of an early 2020 game.
4.1★ galaxy
NG Space Company
Also incremental
A space incremental about mining resources, exploring between stars and conquering systems.
4.2★ galaxy
MyVoiceZoo
Also animals
Record your own voice as animal calls, and each cry in your zoo earns income to adopt more animals, with little need for active play.
92% steam75% idle