Ark v0.5.0 – A Minimal, High-Performance Entity Component System for Go

In plain words

Ark is a lightweight Entity Component System library for Go that provides a clean API with zero dependencies. It is designed for developers building games or simulations who need high-performance batch operations and entity relationship management. The v0.5.0 release includes improved query performance through smarter indexing, random entity sampling methods, and expanded documentation covering design philosophy, entity relations, and parallel simulations.

written from the facts on this page · September 2026

From the sources

Ark -- Archetype-based Entity Component System (ECS) for Go. - mlange-42/ark

Ark is an archetype-based Entity Component System (ECS) for Go . go get github.com/mlange-42/ark Usage Below is the classical Position/Velocity example that every ECS shows in the docs. package main import ( "math/rand/v2" "github.com/mlange-42/ark/ecs" ) // Position component type Position struct { X , Y float64 } // Velocity component type Velocity struct { DX , DY float64 } func main () { // Create a new World world := ecs . NewWorld () // Create a component mapper // Save mappers permanently and re-use them for best performance mapper := ecs. NewMap2 [ Position , Velocity ]( world ) // Create entities with components for range 1000 { _ = mapper . NewEntity ( & Position { X : rand .…from github.com

In the maker’s words, at launch

I’ve just released Ark v0.5.0, a lightweight Entity Component System (ECS) library for Go, built with a focus on performance and simplicity. If you're new to Ark: it's a high-performance Go ECS library with a clean API and zero dependencies. Beyond its core ECS functionality, Ark stands out for ultra-fast batch…

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