We are excited to announce the release of Ark.jl v0.1.0, an archetype-based entity component system (ECS) for Julia, ported from the Go ECS library Ark . If you are unfamiliar with ECS, scroll down to learn why it is especially relevant for the Julia community. Ark’s features Designed for performa…

ReactiveECS.jl currently uses one huge “table” for all entities, which has the issue of potentially vasting a lot of memory. However, the author @Gesee still seems to be iterating on the architecture, as far as I can tell from what I read on the Julia and Flecs Discord servers. There is also some di…

Oh, didn’t know General still accepts such short package names :slight_smile:

We had quite a long discussion about this, and as far as I can tell, this package will probably have the honor of being the last one granted such an exception (since no formal rule is in place preventing it but general registry mantainers are thinking to add one) :slight_smile:

Thanks for the explanation (of the architecture)!

This is really cool :slight_smile: While reading I just got a fun idea! We’ve been discussing to use an entity system for Makie for quite a while to solve one annoying performance problem and make Makie more appealing for more game engine like use cases: for arr in arrays plot!(..., arr) e…

Actually I solved the problem using FragmentArrays.jl which allocate only for entities having the given component… and even improved benchmarks… But right now I’m taking a break from ECS to polish my game engine Cruise.jl so people can use it and extend it at will. So you should use Ark.jl for now…

Would be really happy to have Ark as a plugin for Cruise… Just need to register it in the package manager..

I would actually make it possible to use Makie in my game engine… just that I still need to see how I can make 2d/3d render with it and how it integrate in a game engine… I also though that makie would lack some optimizations specific to game engines such as level of detail or impostors. But I’m n…

Thank you @sdanisch for these interesting suggestions! It would be amazing to see Ark.jl used as a backend of a high quality, frequently used library like Makie! Although I do not really understand the implications of your plot example yet. Regarding your list of advantages, Ark.jl will never becom…

[ANN] Ark.jl: archetype-based entity component system (ECS) for games and simulations

Package Announcements

oschulz November 13, 2025, 3:16pm 2

Just curious, how does Ark compare to ReactiveECS, design-wise and so on?

Topic		Replies	Views
Anyone interested in coding a Julia ECS? Community	55	3008	November 13, 2025
[ANN] Ark.jl v0.3.0: Archetype-based ECS, now with entity relationships and batch operations Package Announcements package	3	266	December 30, 2025
[ANN] Ark.jl v0.5 - Archetype-based Entity Component System (ECS) for Julia Package Announcements package , performance , simulations , ecs	3	305	June 5, 2026
Arceus.jl — A Lightning-Fast Behavior Resolution System Package Announcements package , behavior , games , high-performance , ecs	24	1018	July 3, 2025
[ANN] Ark.jl v0.2.0 - New features for the Julia ECS for games and simulations Package Announcements package , simulations , ecs , gamedev	0	215	November 26, 2025

[ANN] Ark.jl: archetype-based entity component system (ECS) for games and simulations

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