Slime Evolution

Discover. Care. Breed. Evolve.
Bring a new generation of creatures to your Minecraft world.
Slime Evolution introduces 47 slime species, genetics, breeding, metamorphosis, training, and useful abilities for your adventures and your base. Explore the world to find new creatures, develop your own lineages, and challenge four bosses to reach some of the rarest forms.
Featuring custom GeckoLib models and animations alongside SolarPunk-inspired equipment and interfaces, the mod brings nature, research, and technology together through discovery.
πΏ A World of Slimes to Discover
Each species has its own appearance, habitat, behavior, and abilities. Your collection begins with encounters in the wild and grows as you learn to care for individuals, combine lineages, and prepare new transformations.
Meet elemental creatures, discover unusual species, and work toward rare forms such as Prismatic, Aurora, Eclipse, Ancestral, and Celestial.
- 47 species to discover and research.
- Custom models and animations with distinctive visual details.
- Diets and preferences that shape how you care for each creature.
- Species unlocked through exploration, breeding, and metamorphosis.
- A personal catalog that reveals itself as you play.
Finding a new slime is only the beginning. Observation, feeding, and analysis each reveal different discoveries.
𧬠Genetics, Breeding, and New Generations
Every slime has its own genetics. Breed compatible, well-cared-for adults to produce offspring that inherit alleles from their parents and may develop mutations.
Use the Genetic Analyzer to inspect individuals, compare traits, and plan your breeding projects. Follow family relationships, study inheritance, and discover combinations that open new possibilities.
- Inspect alleles and expressed traits.
- Track age, needs, and parentage.
- Breed compatible individuals to develop your lineages.
- Investigate mutations recorded at birth.
- Record genetic discoveries in the Slimepedia.
Careful observation and planning give every generation a new purpose.
β¨ Metamorphosis and Advanced Lineages
Some species require more than breeding. Gather materials, discover transformation conditions, and guide your slimes through new stages of evolution.
Advanced routes connect creature care with exploration and combat. Essences, special materials, and boss rewards all play a part in reaching some of the rarest forms.
Breeding and metamorphosis offer separate paths of discovery, giving you different ways to expand your collection.
π Build Trust and Train Companions
Your slimes need food, energy, and comfort. Meeting those needs helps build trust and prepares your companions to learn commands and take part in life around your base.
Through training, you can teach them to:
- Wait: stay near a chosen location.
- Follow: travel alongside their caretaker.
- Return Home: head back to a previously marked home.
- Roam Freely: resume their natural behavior.
Training stays with the individual through capsule capture and metamorphosis. Choose your companions, prepare a home, and develop your bond over time.
βοΈ 19 Useful Jobs
Different species can perform specialized tasks. The mod includes 19 individual jobs covering production, transport, storage, exploration, and circuits.
Examples include:
- Fire: helps speed up active furnaces, blast furnaces, and smokers.
- Fungal: converts compostable materials into bone meal.
- Abyssal: supports its submerged caretaker with air recovery and night vision.
- Amber: stores items that remain visible inside its body.
- Other species offer item transport, irrigation, lighting, repairs, redstone interactions, and mineral detection.
Keep your helpers fed and comfortable so they can continue working.
π€ Team Up Through Symbiosis
Certain slimes can cooperate in pairs, combining their abilities to perform shared tasks.
Water + Moss help compatible crops grow by advancing their growth stages.
Electric + Iron support processing in the Genetic Station and Incubator.
Train your partners, arrange their workspace, and enable cooperation to make your slime collection part of your daily routine.
π Discover the Slimepedia
The Slimepedia is your personal discovery journal. Build your knowledge by observing, feeding, analyzing, breeding, and transforming slimes.
Research is organized into four sections:
- Field: species information and observations.
- Diet: foods discovered through successful feeding.
- Genes: knowledge gained through genetic analysis.
- Routes: breeding combinations and metamorphoses you have completed.
Browse your discoveries with search, filters, and 3D previews. Unobserved species remain hidden, leaving room for discovery as your research grows.
π¬ Build Your Research Setup
Craft equipment to study and develop your collection:
- Genetic Analyzer: inspect genes, needs, parentage, and evolution routes.
- Genetic Station: analyze individuals stored in capsules.
- Incubator: accelerate juvenile growth using food and supplements.
- Feeder: help keep nearby slimes fed.
- Slime Capsules: capture and transport individuals.
Equipment and interfaces follow the mod’s SolarPunk-inspired style, bringing research and technology into a thriving creature habitat.
ποΈ Explore Structures and Prepare Rituals
Find natural arenas, discover altars, and gather the materials required for boss summoning rituals.
The Royal Court, Elemental Sanctuary, Crystal Cave, and Ancestral Chamber connect exploration with combat challenges and advanced progression.
Prepare before starting a ritual. Each encounter rewards attention to movement, attack warnings, and phase changes.
π Challenge Four Bosses
Gelatinous King
A crowned ruler who combines heavy impacts, area attacks, and specialized minions. Guards, healers, and ranged attackers make target priority part of the fight.
Magmatic Heart
Face eruptions, fire, and explosive servants. Watch for attack signals and leave yourself room to react.
Crystalline Colossus
A heavily armored opponent with shard barrages and area attacks. Use its recovery windows to strike.
Primordial Slime
A three-phase encounter featuring varied attacks and flying summons, tied to the most demanding stages of progression.
Victory rewards contribute to crafting, improved incubation, and advanced metamorphoses.
π Getting Started
- Find a slime and offer food to begin discovering its diet.
- Craft the Slimepedia using a book and a slimeball.
- Use the book on nearby slimes to record your first species.
- Prepare a suitable habitat and keep your slimes fed.
- Progress into genetic analysis, breeding, training, and new lineages.
Build a collection, investigate breeding routes, organize helpers for your base, or pursue boss encounters. Every discovery contributes to your next step.
π¦ Requirements and Installation
Current version: 0.14.1
| Requirement | Version |
|---|---|
| Minecraft Java Edition | 1.21.1 |
| NeoForge | 21.1.264 |
| Java | 21 |
| GeckoLib | 4.9.3 for NeoForge / Minecraft 1.21.1 |
Install NeoForge, then place the Slime Evolution and GeckoLib .jar files in your mods folder.
For multiplayer, both mods are required on the client and server.
π Full Guide
Visit the Slime Evolution online guide for information about species, diets, breeding, metamorphosis, equipment, jobs, and bosses.
Your next great discovery could begin with a little slime.

