- it has tools like https://github.com/flecs-hub/explorer that work with any Flecs project
- it has builtin support for hierarchies/prefabs and more (https://ajmmertens.medium.com/building-games-in-ecs-with-ent...)
- it has optional support for systems/scheduling
- it has an optional reflection framework
- it has an optional DSL for describing assets/scenes, with an online playground to try it out: https://www.flecs.dev/explorer/?local=true&wasm=https://www....
- and a lot more: https://www.flecs.dev/flecs/md_docs_Quickstart.html#autotoc_...