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Watch trailer on Steam ↗绛河之上 Under Supernova
UnderSupernovaGroup · Published by UnderSupernovaGroup · Official site ↗
9 user reviews — 89% positive (9 reviews)
Last updated 27 Sept 2026
An instant strategy science fiction simulation survival sandbox game. Players can control individuals, teams, and manage multiple bases. Players can farm, build, excavate, fight, produce, graze, explore, trade, record and pass on knowledge, and can also fly a spaceship to explore the starry sky.
£6.69
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Price history
Indie, RPG, Simulation, Strategy, Early Access · 2023 · More £5 - £15 games
Control teams and manage resources in Under Supernova’s expansive sandbox where you can farm, excavate, and fly through the stars. Early access offers a deep, diverse experience from UnderSupernovaGroup.
About this game
I hope to bring players a game with greater freedom and fun.
Friends who are not convenient to add to QQ groups can also add Steam friends. If you encounter any problems during the game, you can ask us at any time
A Game that can connect to LLMs
We provide various capability interfaces for large models, including querying various information, controlling character actions, modifying terrain, creating items and buildings, and more. You can let LLM play the role of an NPC in the game, creating stories, shaping "movies", and so on. The LLM has wisdom and the ability to control things in the game. Whatever you need it to do, you can customize it in the prompt words.
(We do not provide large models. You can refer to the server script provided in the documentation to configure it yourself. After enabling the "World Protocol" to operate the internal state of the game, the game will automatically connect to the local port 8223 to regularly reply to queries and instructions from the large model, and change the internal state of the game accordingly.)
Almost infinite sandbox
Each planet is a seamless sandbox that can be excavated, built and interacted with ninety billion billion grids in length, width, and height.
Operation, farming and exploration can be simulated in a Z-axis map of almost infinite size, which is not limited to n*n grids.
Early LAN gaming online
Some optimization is still needed, but initial support for local area network connectivity is available.
This is also an online real-time strategy game with a z-axis and a map size of 90 billion billion squares.
You can lead different groups with your friends, build your own urban agglomerations, trade, and cooperate to deal with crises in the same vast seamless continuous world.
Diverse operating modes
You can control individual individuals to role-play, collect, log, excavate, build, manufacture, fish, trade, fall in love, explore, and more.
You can control an unlimited number of teams to engage in battles, explore ruins, and run businesses simultaneously.
Various map commands can be added for base management, planning batch collection, logging, excavation, construction, production planning, bulk trade, and more. Classify and manage character behavior, quickly locate individuals and each pile of items
You can operate spacecraft and interact with various celestial bodies.
npc of free action
Following the rules of residence, NPCs have their own life trajectory, family, residence, and property.
From birth to school learning, to getting married and starting a career, one has their own life.
They will eat, drink, and sleep on their own, and they will recommend teachers, guards and management personnel on their own.
The products in the place of residence will also self mobilize the production chain, ensuring the production of local specialties and livelihood materials step by step from raw materials.
In addition to recruiting NPCs as members, you can also recruit them to work for yourself. On the contrary, each character of the player can also go to a neutral place of residence to work.
It is also possible to accumulate foreign exchange through the economic activities of different individuals within the group, and use this to purchase goods from other groups, rather than just bartering.
Players can also place production orders with neutral villages, and they will arrange production on their own.
Under non special circumstances, it can smoothly run hundreds of NPCs and thousands of units including animals.
words-driven interactions and tasks
People communicate information through utterances with frequency and volume that decay with distance, command others, talk about needs, receive and deliver tasks.
Simple automation
Based on signals and timers, automatically move items, produce products, define signal associations, switch item icons, detect temperature, pressure, and water amount, detect passing people, and more.
Free module
Everything in the game is definable and can also be expanded like samples. You can customize items, creatures, buildings, production systems, knowledge, skills, combat methods, illness, injury, career experience, tasks, events, preset characters and even relics and large buildings. You can also customize their connections. You can also refer to English translation files for localization in other languages. And even if the modules are interdependent, there is no need for sorting. The built-in visual blueprint editor allows for real-time editing of relics and large buildings. You can refer to the files in the data directory of the game itself for modification and expansion. Many mechanisms have not yet been extensively filled with content, but there are several examples.
Custom opening background
You can define scenes at any location on the planet, define events and tasks associated with scenes and times, customize associations between events and characters, and customize supplies and characters at the start time. Create the player's own script.
The game also has multiple pre-set openings, allowing for several different adventures.
Biochain and Biological Simulation
Biomass accumulates from the photosynthesis of plants throughout the entire process of germination, growth, fruiting, and diffusion, and is transmitted to the biological chain of plants, herbivores and carnivores.
Plants compete for limited nutrition, and animals must eat real food to survive.
Various animals roam, feed, hunt, build nests, weave nets, and reproduce.
Diversified terrain
Mountains, plains, hills, water bodies of varying heights, abandoned cities, deserts, swamps, snowcapped mountains, oceans, salt lakes, karst landforms etc. have diverse terrains. The temperature also changes with height.
Exploration beyond planets
The story takes place in the distant future.
You can build a spaceship to explore other planets and galaxies.
Whether it is a Terrestrial planet, a gaseous planet or a star, it is necessary to pay attention that the planet without livable transformation requires a considerable level of science and technology to survive.
Inheritance of knowledge and classics
Knowledge is the prerequisite for skills and production.
Knowledge is the knowledge that each person possesses separately, and it needs to be learned through human guidance and the carrier of knowledge.
New knowledge can be developed from knowledge.
Knowledge can be engraved on stones, written on paper, and print on metal plates.
Combat and Skills
Knowledge brings skills, skills bring combat methods, and enhances combat methods.
Skill levels can increase attack damage significantly.
People can become stronger warriors through training and combat.
The damage of an attack is divided into different dimensions based on its actual attributes, and the protection provided by equipment is also the same. Clothing made of refractory materials has considerable burn resistance, but may be ineffective for stabbing injuries.
Diseases and injuries
Diet, aging, injuries, and contact with wild animals can lead to diseases that evolve into mild and severe conditions, and may also lead to complications.
Through medication, diseases can be treated, with severe cases becoming mild and mild cases becoming absent, but it may also bring adverse reactions and new complications.
Even in an ordinary battle, untreated infection can take the life of a character.
Even small wild animals can carry deadly pathogens.
System Requirements
Will my PC run this? →Minimum
- OS: 10
- Processor: Any
- Memory: 4096 MB RAM
- Graphics: Any
- Storage: 10240 MB available space
- Sound Card: Any
- VR Support: Any
- Additional Notes: None
Recommended
- OS: 10
- Processor: Any
- Memory: 4096 MB RAM
- Graphics: Any
- Storage: 10240 MB available space
- Sound Card: Any
- VR Support: Any
- Additional Notes: None
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
8/10 Recent Updates
\The recipe has added a ForAI flag to provide simplified recipe information to AI.The item has added an AI specific aiDesc field to help AI understand the item more accurately.The character has added an AI specific aiDef field to temporarily store the character's settings and script fragments, assisting in restoring the state when clearing the context.\The document can be set with the first line in the form of "category | | title". Enhance the readability of documents through document classification to reduce the difficulty of starting.Fine tune the interface style and make configuration items more intuitive through categorization.Added a right-click command to clear enemies within 10 squares, avoiding the need to click on enemies to initiate battles and reducing the amount of operations. It can only be initiated when controlling multiple characters.\The middle mouse button zooming in and out of the map does not exit the map command mode.The height observed on the current map will be displayed on the right side of the time barOptimization of several window styles.Make camera movement speed and dual loading thread configurations persistent.You can allow display areas on the settings page, and corresponding rectangular boxes will be drawn. \Some animals shed their fur when they die.Adjust the cold resistance of thick clothing to 7.Added feather drops for chickens, ducks, and birds, which can be used to make down jackets.Added short down jackets (cold resistance 10), long down jackets (cold resistance 20), and extreme cold down jackets (cold resistance 30)Added various pre knowledge of clothing hygiene for down jackets, and exempted sewing machines from this knowledge by 100 pointsAdded the "needle" symbol and a recipe for making bone needles using bones, with the bone needles bearing the "needle" symbol.Recipe ingredients can be marked with the "medium" symbol, so that they can be returned after manufacturing is completed. (such as using sewing needles as part of the ...Read full article on Community Announcements (UnderSupernovaGroup)AnnouncementsOfficial
7/10 Recent Updates
\Integrating AI is a significant improvement, so upgrade the version number to a larger one.World Protocol: Built a framework for regulating the in-game world through text, making it easy to integrate with large models. The debugging page allows for experimental viewing of control inputs and feedback outputs.The big model can query various information, control characters to make actions, speak according to personality and settings, change terrain, add map commands, add items and buildings at any point, create characters, trigger events, and more.AI can play roles such as "Heavenly Dao" and "Three Goddesses of Fate", regulating the behavior of various characters and adjusting the triggering of events.AI can also play the role of a character in the game and move freely in a free world.When enabling the World Protocol, access the local port 8223 every 0.1 seconds to interact with the local HTTP server (requiring a large model and Prompt) and obtain new instructions from the large model. However, it may take several seconds for the large model to generate tokens.Supports various information query commands, character action commands, speech commands, commands to change terrain, create items, and more. You can manually paste input and output into the large model (the AI part will not be integrated into the ontology, so you can ask the development team for the initial prompt).Optimize the display of the world protocol window, visualize AI operations, and provide corresponding jump buttons.Convenient to observe the AI hosting effect, a button has been added to jump to the corresponding position based on the character ID in the window.When a character is assigned an action by the large model, they receive an additional high resource pathfinding opportunity, which is applicable for the next pathfinding. \Character presets can now be configured with gender.For species that have configured a pool of drawing components, you can adjust the tiles used for each drawing component on...Read full article on Community Announcements (UnderSupernovaGroup)AnnouncementsOfficial
Response to "ideas and questions":
\ideas and questions!\ Solicit players' specific needs for more buildings, furniture, decorations, and more that you want to see. What do architecture enthusiasts lack, we strive to customize what! after that 1. In the game, the appearance can be adjusted by wearing clothes, skirts, pants, shoes, and some accessories. Although it looks the same on the stack of items, wearing it will change the appearance of the character But only for humans, corresponding materials have not been customized for other races. You can also refer to the existing JSON content, add images and define to create mods! 2. There is a special script "time for quiet and good" without enemies. 3. Careful preparation can be made for character customization at the beginning, such as professions, installable components, and so on. 4. \ In the beginning configuration, the initial appearance of characters (such as hairstyle, color, clothing, etc.) can also be configured, but only for humans (we only have assets for humans now, modders can freely expand these) 5. \ Different materials can be configured to distinguish between adults and minors, and currently only humans can customize these materials (we only have assets for humans now, but we will add more images in the future). 6. \ Text input for naming will not be open, but now you can freely select from the name library to change the name.Read full article on Community Announcements (UnderSupernovaGroup)AnnouncementsOfficial
6/10 Summary of Recent Updates
\You can define the charging limit field for the item. If it is not specified, it will be automatically set based on the rechargeable flag or default built-in power.Added a small battery with 10 units of battery capacity and added it to various item pools, making it easy to replenish the battery by adventuring when carrying the robot at the beginning. New small energy storage devices, medium energy storage devices, and large energy storage devices have been added to provide the upper limit of electricity storage.Every day at 10 o'clock, any excess battery beyond the group's battery storage limit will be automatically wirelessly charged into a robot. If there are no active robots, the battery will dissipate.A new type of power guarantee robot has been added, which comes with electromagnetic induction knowledge and can be used to manufacture power generation equipment. Pure robots can start with simple maintenance without relying on humans.\A new unfolding action has been added, allowing items in the folded version to immediately unfold a building in place, which is faster than building through unfolding formulas.The default action configuration for most folded versions of items is the unfolding action. You can put these folded items in the quick item bar, so as to bypass the construction process and quickly place them like similar games.These buildings can be dismantled in urban blocks or ruins to obtain folded versions. But most buildings are heavy, so it is necessary to significantly increase the weight of the characters.The foldable version added to torches, makes it more convenient to provide lighting for the wilderness.Added a formula for making grass ropes from ordinary grass, reducing the difficulty of making wooden bows in the early stage.Added oil worms - dormant digging species that can navigate through sand and soil and it has been added to underground ruins.Adjusted the logic of generating monsters when growing oil insect plants, resulting in more frequen...Read full article on Community Announcements (UnderSupernovaGroup)AnnouncementsOfficial
5/9 Recent Updates
Several item pools have been added. Differentiate according to danger levels from 0 to 10. A new type of automatically generated dungeon has been added: the underground tower, which is divided into 8 levels of height, from low to high, using corresponding difficulty levels of scattered items and building item pools, as well as monster species item pools. Ten 20 * 36 * 36 ground towers have been pre generated and added to the dungeon pool of the block, so that they may be discovered on the surface during exploration. Oil bug species with a danger level of 0-7 are placed in order from low to high. Thus, there is no need to explore blocks with a danger level of 0-10 in sequence, and it is possible to quickly meet monsters from easy to difficult. Placed an additional oil bug ground tower to the north of the block near the initial base location, making it easier for beginners to discover and explore more quickly. Modder can adjust parameters in the map editing window to randomly generate more instances of ground towers and set their positions in the script, or add them to the dungeon pool of the block. You can also batch export JSON files containing the blueprint definition of the ground tower by reusing the parameters in the map editing window in the debugging window (automatically generated in the program running directory and effective in the data_core/ directory). The initial block moves westward, with danger levels ranging from 1 to 9 Added rusty iron knives, rusty iron swords, rusty iron spears, rusty iron axes, rusty iron pickaxes, rusty iron bars, rusty iron bows, which can only be used about 30 times and are no different from the non rusty version. More of these weapons, which can only be used temporarily, appear in the ruins. Added knife technique, sword technique, spear technique, axe technique, pickaxe technique, stick technique, automatically learned when using corresponding weapons, and added damage to corresponding weapons. Because it has been replaced by ...Read full article on Community Announcements (UnderSupernovaGroup)
