Tutorial: Create a Playable Game Tutorial: Create a World

How-To: Edit Components How-To: Publish and Play How-To: Use MCP Tools How-To: Write GessaScript

Reference: Action Catalog Reference: Backpressure and Degradation Reference: ECS Components Reference: ECS Model and Contracts Reference: Graph Room Sequencer Reference: MCP Tools Reference: Netcode Contract Reference: Physics Contract Reference: Runtime Error Registry Reference: Runtime Playability Reference: Script Nodes

Explanation: Backend Authority Explanation: Overload and Degradation Model Explanation: Entity Component System Explanation: Graph Room Sequencer Explanation: Netcode Model Explanation: Physics Simulation Explanation: Playability Proofs Explanation: Player Browser Runtime Explanation: The Project Graph Explanation: Serving a World on a Custom Hostname Explanation: Runtime Error Registry Explanation: Script IR and GessaScript Explanation: Versioning Policy

Agent-native authoring over MCP: Gessa vs Unity vs Unreal Browser-native 3D engine, no install: Gessa vs Unity vs Unreal Deterministic, replay-verified physics: Gessa vs Unity vs Unreal Compare Gessa to Unity and Unreal Instant multiplayer worlds vs open-world streaming: Gessa vs Unity vs Unreal Server-authoritative multiplayer without a netcode plugin: Gessa vs Unity vs Unreal

Gessa AI Context (v1)Gessa Context for Claude Code Gessa Context for Codex Common Failures and Repairs Gessa AI Context (Full, v1)Gessa Gessa MCP Tool Use

Advanced Runtime Controls Live Getting Started Managing Players Managing Rooms Live Performance Scaling Up Live Troubleshooting Upgrading Your Plan From Live Your Multiplayer Server

App Shell Chat AI Approvals Blueprint AI AI Chat Panel AI Collaboration Error Explain Generation From Chat Getting Started With AI AI In Gessa Right-Click AI Actions Warehouse AI Workbench Chat AI Workspace Config

Apex Renderer Performance Guide Environment Profiles Graphics In Gessa Lighting Materials Particles Graphics Performance Tuning Post-Processing Terrain Water

Buying Credits Invoices And Payments Plans Spend Caps Upgrades And Downgrades Usage And Limits

Concurrent Editing Presence

Visual Scripting Visual Scripting Collaboration Visual Scripting Comments And Groups Visual Scripting Events Visual Scripting Functions Visual Scripting Parking Visual Scripting Reroutes Visual Scripting SDK Access Visual Scripting Variables

Animation clips walk run attack idle and poses Asset acquisition strategy Asset to instances model prefab instance authoring chain Atmosphere sky lighting fog and time of day Audio sound effects music and positional feedback Authoring with a build program (world_author_program)World build document authoring compile apply loop Blank game quickstart cold start recipe empty project Camera feel field of view smoothing tone mapping and post Camera modes top-down isometric side-scroller and switching Capability ceiling what the agent cannot author and the in-envelope fallback Collectibles pickups scoring and win condition Combat damage health and respawn scripting Composed props building organic and complex objects from primitives in one prefab Day night cycle and moving sun by script Destructibles breakable crates walls and debris Doors buttons levers and press-to-interact First-person camera movement and mouselook controls Game feel juice hit flash camera kick and impact Game loop assembly entities scripts HUD win shippable loop Hazards lava damage zones and water Imported and uploaded 3D models in the world Input mapping actions bindings keyboard mouse gamepad touch Inventory item pickups keys and equipping Juice and polish pass the presentation phase after the playtest proof Jump pad bounce pad launcher and springboard Leaderboards rankings and persistent high scores Manager scripts driving many objects from one system Match flow phases scoreboards and win conditions Materials and looks PBR surfaces color metalness and textures Model authoring parametric primitives and CSG for custom meshes Moving platforms, elevators, rotating hazards, and objects on a patrol path Multiplayer blueprint basics rooms queues teams netcode budgets Multiplayer replication rooms and networked motion NPC dialog conversations and press-to-talk prompts NPC and enemy navigation chase and patrol behavior Particles explosions and visual effects Physics colliders rigid bodies triggers and joints Player movement abilities dash sprint and double jump Playtest verification loop proving gameplay executed evidence Pointer click and tap to world cursor interaction Projectiles bullets and ranged weapons Saves persistence player progress and data stores Scenery composition terrain-first workflow, sampling height, and visual verification Spawn points checkpoints and respawn flow Teams team based matches and shared team score Teleporters portals and warp pads Terrain and heightmaps procedural generation biomes and foliage Terrain basics ground heightmap and sculpting Third-person follow camera and platformer jump movement Timers countdowns cooldowns and enemy waves Event wiring one trigger emits another responder reacts Turrets auto-aim and target tracking guns UI HUD panels widgets and world nameplates Vehicles cars and drivable physics Writing GessaScript source to rewrite or remove behavior a patch cannot express (whole-body script text)

Action Catalog AgentEnv contract registry AgentEnv data controls Authoring Mutation Contracts Authoring History / Undo-Redo Contract (generated)Capability Catalog Capability Pack Architecture CLI Commands Component Type Definitions Configuration Flags Security Data Class Registry Engine Capability Graph Snapshot Runtime Error Catalog Feature Contract Registry Material Semantic Patch Platform Catalog Rate Limit Reference Platform Roles and Security Scopes HTTP Route Reference Script Effect Contracts Script Node Declarations Script SDK Surface Script Semantic Patch AI World Build Contract claude.ai Remote MCP Claude Code Claude Desktop Continue Cursor Examples Gessa MCP MCP Inspector Quickstart Security Tool Reference Troubleshooting Components Audio Components Components Input Profile Input, Runtime, And Scripting Components Physics Components Renderer Visual Profiles Rendering Components Runtime, Input, And Scripting Components Spatial And Rendering Components

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Entity rows expose:

engine v1.0.234Copy for LLM

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