Interactive ECS Systems/Component Explorer for Cities: Skylines 2
Hello Hacker News! Long time reader but first time poster here... Recently I've been diving into doing mods for Cities: Skylines 2, which been very interesting as it's one of the first games that is using ECS and that I also have a deep interest into. I've mainly used ECS via Bevy before, but this time it's Unity, but many things still work the same way. In order to help myself and other modders to navigate the ECS Systems and Components from the decompiled code, I created this interactive D3 graph. You can click on nodes to "navigate" to that system/component, and once you're zoomed in…
Interactive ECS Systems/Component Explorer for Cities: Skylines 2 launched on December 19, 2023 with 95 votes, #605 of 3,780 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Interactive ECS Systems/Component Explorer is a visualization tool for Cities: Skylines 2 modders. It displays the game's Entity Component System architecture as an interactive D3 graph, allowing developers to explore systems and components extracted from decompiled code. Users can click nodes to navigate, view detailed information in a sidebar, and filter elements with Ctrl+click. The tool helps modders understand and work with Unity's ECS implementation in the game.
written from the facts on this page · September 2026
From the sources
Interactive explorer of ECS systems/components in Cities: Skylines 2
In the maker’s words, at launch
Hello Hacker News! Long time reader but first time poster here... Recently I've been diving into doing mods for Cities: Skylines 2, which been very interesting as it's one of the first games that is using ECS and that I also have a deep interest into. I've mainly used ECS via Bevy before, but this time it's Unity…
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