Games like Birthdays the Beginning on Steam
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Galimulator
Galimulator is a galactic empire simulation and sandbox game. See how Empires rise and fall, and how the people in them climb through the ranks to bring prestige to their Dynasty. Then throw in an invasion of self replicating Smatter monsters if you want to spice things up.
SPORE™ Creepy & Cute Parts Pack
Add horror and humor to your universe. Make grotesque beasts or cuddly critters, then watch them do the robot, zombie walk, break dance and more! Includes over 100 new items. 60 New parts 48 New paint options 24 New animations
Species: Artificial Life, Real Evolution
Play with evolution! Species: ALRE is a scientifically-grounded, emergent simulation of natural selection. Creatures evolve and speciate in response to in-game mutation and selection forces, allowing you to experience and tinker with evolution in real-time.
Reus
In Reus, you control powerful giants to shape the planet to your will. You can create mountains, oceans, forests and more. Enrich your planet with plants, minerals and animal life. There is only one thing on the planet that you do not control: mankind, with all their virtues and and all their vices.
Prehistoric Kingdom
Take on the role of park manager and design the ultimate zoo for nature's greatest creations.
Terra Firma
Play god and create your own world in this complex simulation. Plate tectonics, wind and water erosion and plant life all develop and interact to produce a world that is viewable from a single tree to kilometres across.
Crest - an indirect god sim
Your word is gospel in this god sim set in Sub-Saharan Africa. Influence and try to control your followers using commandments but beware, free will leaves these open to interpretation. Will you create a flourishing civilization or lead them to death and destruction?
WorldBox - God Simulator
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn!
Creature Creator
Create your own creatures to explore online worlds with friends and collect new parts to upgrade your stats and abilities! Complete quests, battle enemies, challenge friends to minigames, or just have fun roleplaying — the possibilities are endless when your imagination is the limit!
Bunny Park
Manage your own bunny park! Give snacks and toys to your bunnies. Improve and decorate your park to increase its popularity and collect all the bunnies!
Zoo Tycoon: Ultimate Animal Collection
The wildly popular Zoo Tycoon series gets set to crank up the excitement, challenge, and fun of building the ultimate zoo. Let your imagination run wild with Zoo Tycoon: Ultimate Animal Collection. Build, manage, and maintain your dream zoo alone or with up to four players.
Planet Coaster 2
Build and customise thrilling roller coasters and incredible water slides, manage the ultimate theme park experience, and share your epic creations. Are you ready to ride the wave?
Equilinox
Equilinox is a relaxing nature simulation game in which you can create and nurture your own ecosystems. Shape the world to your liking, cultivate and raise hundreds of different species, and evolve your wildlife to unlock more exotic plants and animals.
Jurassic World Evolution 2
Jurassic World Evolution 2 is the much-anticipated sequel to Frontier’s highly successful Jurassic World Evolution. This bold new era in the Jurassic World Evolution game franchise builds upon the ground-breaking and immersive 2018 management simulation.
The Sapling
The Sapling is a short simulation game where you design your own plants and animals, and put them in a world together. Or you turn on random mutations, and see what evolution does to your ecosystem!
Jurassic World Evolution
Place yourself at the heart of the Jurassic franchise and build your own Jurassic World. Bioengineer dinosaurs that think, feel and react intelligently to the world around them and face threats posed by espionage, breakouts and devastating tropical storms in an uncertain world where life always finds a way.
Universe Sandbox
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
SuchArt: Creative Space
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
Marble World
Marble World is a physics sandbox simulator with marbles. Create your own marble races, runs and machines. Customize a variety of tracks, decorations and marbles to create a beautiful world.
Animal Revolt Battle Simulator
The ultimate physics-based, sandbox battle simulator where you can create funny battles between all sorts of ragdoll creatures! You can also make your own monsters with the unit creator or even join the battles yourself in the first-person mode!
Ultimate Epic Battle Simulator 2
Welcome to Ultimate Epic Battle Simulator 2, the most ridiculous and insane battle simulator in existence! Create eye watering battles with hundreds of thousands, even millions of characters on screen! Jump into multiple campaigns in game or player made, or play in sandbox mode and FPS invasion