Games like Mutant Tomagachi

"Niche: A Genetics Survival Game" is a strategy simulation where players manage a tribe of animals, navigating through diverse islands with varying environments. Your goal is to adapt your species to survive, managing their genetics, behaviors, and traits. Overcome challenges such as harsh weather, predators, and limited resources to ensure your species' survival and evolution.

"Creatura is a simulation game in early access, available on STEAM, which allows players to design and manage ecosystems with scientifically accurate natural and artificial selection. Create and evolve your own fauna and flora using DNA editing tools like CRISPR and GMO, and sell plant cuttings to buy decorations and consumables. The game features one open-ended 'sandbox-like' mode with beautiful bonsai-style vivariums and a goal to fulfill a unique almanac of species."

CritterGarden is a cozy, single-player kids simulation game where you breed, feed, and collect adorable Critters with unique diets and emotional needs. Customize gardens with diverse biomes, unlock research upgrades, and evolve your Critters to complete the entire Critter Phylogeny. Enjoy a relaxing farm sim experience suitable for all ages.

Tiny Pasture is a cozy farm simulator that lives at the bottom of your screen, letting you raise and grow a variety of adorable baby animals while you work or study. Collect coins from fully grown critters like rabbits, foxes, alpacas, and even slimes or zombies to expand your pasture. Interact with your animals by feeding and playing with them, watching your little farm flourish alongside you.

"Intelligent Design: An Evolutionary Sandbox" is a simulation game that allows players to create and modify a variety of ecosystems and organisms. Design and evolve creatures with unique abilities, behaviors, and appearances using an intuitive design tool. Observe how your creations adapt to environmental challenges and compete or cooperate with other species in a dynamic, ever-changing world. **Approximately 256 characters

"Space Crew: Legendary Edition" is a strategic survival simulation game where you are a captain in the United Defense Force, defending Earth against an alien threat. Customize your star ship, recruit and train your crew, and complete various missions to protect humanity. Expect challenges, loss of crew members, and the need for quick thinking and repair skills in the face of enemy attacks.

Mython Island is a monster catching RPG with rogue-like elements! Choose creatures known as Mython to add to your party, choose your path forward, fight strong enemies, and grow together to uncover the truth of Mython Island!

Marine Park Empire is a business simulation game where you build and manage your own marine park. Create exciting habitats for a variety of sea creatures, keep visitors happy with fun attractions and restaurants, and balance the needs of your animals and profits. Expand to new locations and become a marine park tycoon!

Equilinox is a single-player 4X game that offers stunning visuals and an exceptional soundtrack, but can be very grinding with plenty of bugs. As a low-poly nature simulation game, it allows players to create and manage their own ecosystem in an engaging and highly emotional atmosphere, currently being developed in Java using OpenGL.

A deep roguelike colony RPG inside a dead god's corpse. Procedurally generated events, branching narratives, species with unique traits, and meaningful choices that shape your colony's fate. Every playthrough tells a different story of survival and evolution.