genaray/Arch
A high-performance C# based Archetype & Chunks Entity Component System (ECS) with optional multithreading. observed · 2026-08-28
Health v2 · maintenance only
73/100
- Activity 96
- Release rhythm 28
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 75
- age_days: 1420
- days_rel: 463
- days_push: 27
- n_releases_24m: 2
Adoption not part of the score
1808 stars · 172 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Arch is a high-performance C# Entity Component System (ECS) library based on archetypes and chunks, with optional multithreading. It targets .NET Standard 2.1 and .NET 6/8, making it usable in Unity, Godot, MonoGame, Stride, and other C# projects.
Use cases
- entity component system for c# game development
- fast ecs library for unity or godot
- data-oriented programming in dotnet
- manage thousands of game entities efficiently
- multithreaded entity queries in c#
- cache-friendly component iteration
When to choose
- you need a fast, minimal ECS in C# comparable to C++/Rust ECS libraries
- you develop with Unity, Godot, MonoGame, or Stride and want a modern ECS
- you want a simple, unbloated API with active maintenance and extensions
When to avoid
- you need a full game engine rather than an ECS library
- your project is not on .NET/C#
- you prefer a batteries-included ECS with built-in rendering, networking, or editor tooling
Facets
library · maturity active
game-engine concurrency dotnet cpp cross-platform ecs entity-component-system archetype chunks unity godot monogame stride csharp multithreading performance game-development gamedev data-oriented-programming
2 sources
- readme: https://github.com/genaray/Arch · fetched 2026-08-28 · df280ececa6a
- homepage: https://arch-ecs.gitbook.io/arch · fetched 2026-08-29 · 888feffc1cf4
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| genaray/Arch | main | 73 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem