State Designer - DOTS Powered Finite State Machines

Build gameplay logic visually, even if you have never used a state machine before. State Designer is a visual finite state machine editor for Unity that lets you connect states, actions, conditions, events, and transitions to create character abilities, interactive objects, UI flows, scene logic, AI behaviors, and more.

State Designer includes an extensive library of ready-to-use actions and conditions, allowing you to start building useful gameplay systems immediately.

Under the hood, State Designer uses a high-performance DOTS-backed runtime designed to keep execution efficient and predictable as your graphs and projects grow. You don't need any DOTS knowledge or custom scripting to use it.

📚Documentation | 🎥Videos | 💬Discussions | 🌐Discord

✨ Create Logic Visually

• Build finite state machines with an intuitive node-based editor
• Connect states using events, conditions, and transitions
• Choose from ready-to-use actions and conditions for animation, audio, input, physics, NavMesh, UI, scenes, save/load, variables, math, and more
• Run actions sequentially or in parallel
• Share data across your graph with Shared Variables
• Inspect variables and debug graph execution at runtime
• Create reusable subgraphs with overrides and inheritance
• Save, load, pause, and resume runtime state

🔌Connect Your Existing Code

Browse compatible methods from your scripts, Unity components, and installed assets, then use them directly as actions or conditions. Configure parameters and store return values in variables without needing any custom wrappers or integration scripts.

🤖 Build Faster with Atlas

State Designer optionally integrates with Atlas, Opsive’s AI assistant. Atlas works with the Codex access included in your existing ChatGPT plan, so no separate Atlas subscription is required. Describe what you want to build in plain language, and Atlas can answer questions, plan your implementation, and generate code designed around the Opsive APIs in your project.

Learn more about Atlas

🎮Build Logic Across Your Entire Game

State Designer can organize any system with clear phases or modes:

• Gameplay: Abilities, combat states, cooldowns, and interactions
• Interactive Objects: Doors, elevators, switches, traps, and puzzles
• UI: Menus, prompts, dialogue, and screen transitions
• Scene Management: Loading, unloading, and persistent scenes
• AI and Simulation: Reactive agents and event-driven world logic
• Turn-Based Games: Phase management and action resolution
• Save Systems: Persistent state and variable restoration
• Custom Systems: Project-specific mechanics built visually

🚀 Start Simple, Scale When Needed

• Works with GameObjects, hybrid projects, and Unity Entities
• DOTS-backed runtime for efficient state execution
• Burst-compiled traversal and transition systems
• Supports both object-backed and DOTS-backed nodes
• Familiar APIs for custom states, actions, and conditions
• Custom editor controls and inspectors
• Designed for maintainable, long-term project integration

🤝Seamless Integrations

• Animal Controller
• Behavior Designer Pro
• Dialogue System
• DOTS Survivors
• Easy Build System
• Essential Kit
• Feel
• Juicy Actions
• Love/Hate
• Curvy Splines
• Quest Machine
• Sensor Toolkit 2
• Simple Waypoint System
• Ultimate Character Controller
• Ultimate Inventory System

State Designer combines the proven clarity of state machines with a modern DOTS-based runtime, giving you a flexible way to build performant, scalable game logic inside Unity.