ɅNTIMɅTTΞR is an AI Unity toolkit for scene generation, C# scripting, terrain creation, and editor automation from natural-language prompts, using a BYOK (Bring Your Own Key) model.ɅNTIMɅTTΞR is an AI-powered Unity editor toolkit designed to accelerate development by transforming natural-language prompts into real, executable editor actions. Built for Unity 2022.3+, it enables developers to move from concept to playable prototype with a structured, agent-style workflow that combines procedural worldbuilding, C# scripting, and automated scene construction.At its core, Antimatter introduces an intelligent editor workflow through a dedicated in-editor interface, allowing developers to describe scenes, systems, and gameplay elements in plain language. The system interprets these prompts and executes them using structured tool-calling—directly creating and modifying GameObjects, configuring components, generating scripts, and updating scenes inside the Unity editor.Unlike basic AI assistants that only generate text, Antimatter performs real editor operations through a plan-and-execution pipeline. Developers can review generated plans before execution, ensuring control, transparency, and iterative refinement during development.The toolkit includes robust procedural terrain generation, reusable Terrain Asset Profiles, and specialized layout systems for building city environments, road networks, racing tracks, and compact FPS-style levels. Scene-aware orchestration leverages project and hierarchy context to produce more accurate and coherent results.Antimatter is fully open-source and designed for extensibility, making it ideal for teams and developers who want to customize AI-assisted workflows within their own pipelines. The architecture is cleanly divided into Runtime and Editor assemblies, enabling seamless integration without polluting production builds.Importantly, Antimatter follows a BYOK (Bring Your Own Key) model. Developers connect their own API keys to supported AI providers—including OpenAI, Groq, Gemini, and other OpenAI-compatible endpoints—giving full control over usage, costs, and provider selection.Key FeaturesOpen-source Unity editor toolkit with a modular, extensible architectureAI-driven editor workflow via a dedicated Antimatter windowBYOK (Bring Your Own Key) support for OpenAI, Groq, Gemini, and compatible APIsPrompt-based scene creation, editing, and iterationAI-assisted C# script generation and modificationStructured tool-calling system for executing real Unity editor actionsAutomated GameObject creation, transform adjustments, and component setupProcedural terrain generation with reusable Terrain Asset ProfilesScene-aware orchestration using project and hierarchy observationSpecialized layout tooling for cities, road systems, racing tracks, and FPS arenasVisual plan-and-review pipeline before executionClean Runtime and Editor assembly separation for production-safe integrationOpen-source architecture with Runtime and Editor assembly separation for easier inspection, extension, and integrationAI-powered Unity editor workflow through a dedicated Antimatter window for prompt-driven creation and editingStructured tool calling that performs real Unity editor actions instead of only generating text responsesAI-assisted C# scripting for generating and modifying scripts directly from promptsPrompt-based scene generation for building environments, layouts, and gameplay scaffoldingAutomated editor actions including GameObject creation, hierarchy changes, transform updates, and component setupProcedural terrain generation with reusable terrain asset profile supportScene and project awareness through project observation and hierarchy/scene context systemsPlan-and-execution workflow with review utilities before applying changesLayout generation tools for city scenes, road networks, racing setups, and compact FPS-style levelsMulti-provider AI support including OpenAI, Groq, Gemini, and OpenAI-compatible custom endpoints with a BYOK (Bring Your Own Key) modelUnity version compatibility: Unity 2022.3 or newerDependency: Newtonsoft.Json (com.unity.nuget.newtonsoft-json)AI was used as a development aid in creating the package, specifically for building and refining the tool-calling workflow that enables prompt-driven Unity editor automation. This included assistance with workflow design, implementation iteration, and feature development around structured action execution. Final package functionality and deliverables were reviewed and prepared for release as part of the authored product.
