Documentation

Getting Started

• FAQ
• Quickstart
• Designing with Flecs
• Getting Started with Unreal Engine
• Unreal-Flecs (Unreal Engine Flecs plugin)
• Godot-flecs-sample (example)
• Flecs-Godot (GDExtension)
• Godot-turbo (engine module) (demo project)
• Getting Started with Raylib
• Getting Started with SDL3, ImGui, Sqlite (video)
• Getting Started with SDL3, Blend2D
• Flecs an Raylib template

Manuals

• Manual
• Entities and Components Manual
• Query Manual
• Query Language Manual
• Systems Manual
• Observers Manual
• Hierarchies Manual
• Prefabs Manual
• Component Traits Manual
• Relationships Manual
• Flecs Script Manual
• Flecs Remote API Manual
• v3 Migration Guide

API reference

• [C API](@ref c)
• [C++ API](@ref cpp)

Examples

• C examples
• C++ examples
• C# examples
• Rust examples

Videos

• Setting Up The Project (E1)
• Creating Your First World (E2)
• Components In Flecs (E3)
• Tagging Your Creations (E4)
• Beaty Of Pairs In Flecs (E5)
• What is a Prefab? (E6)
• Some Pointers for C (E7)
• Demistifying Queries Part 1 (E8)
• Demistifying Queries Part 2 (E9)
• Flecs Systems (E10)
• Observing Changes (E11)
• One to Rule Them All (singletons, E12)

(Shoutout to jellycake222 for making the awesome tutorial series <3!)

Open Source Projects

• Extermination Shock Source
• ECS Survivors Source
• Playground (Flecs Script)
• Tower Defense (C++)
• City (C)

Articles

• Where are my entities and components
• Archetypes and vectorization
• Storage in pictures
• Data Oriented Hierarchies
• Making the most of entity identifiers
• Building games in ECS with entity relationships
• Why it is time to start thinking of games as databases
• A Roadmap to ECS relationships
• Why storing state machines in ECS is a bad idea
• Why vanilla ECS is not enough
• ECS: From tool to paradigm

Resources

Resources provided by the community

Some of these are quite old, and might contain information that is out of date!

• Bgfx/Imgui module
• Tower defense example
• Unreal + Flecs example
• Building a space battle with Flecs in UE4
• Flecs + SDL + Web ASM example (live demo)
• Flecs + Raylib example
• Flecs + gunslinger example

Flecs around the web

• Discord
• Medium
• Twitter
• Reddit