Arch 2.0.0-beta

.NET 6.0 This package targets .NET 6.0. The package is compatible with this framework or higher. .NET Standard 2.1 This package targets .NET Standard 2.1. The package is compatible with this framework or higher.
This is a prerelease version of Arch. 
dotnet add package Arch --version 2.0.0-beta                

                    
                

            
NuGet\Install-Package Arch -Version 2.0.0-beta
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Arch" Version="2.0.0-beta" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Arch --version 2.0.0-beta                

                    
                

            
#r "nuget: Arch, 2.0.0-beta"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Arch as a Cake Addin
#addin nuget:?package=Arch&version=2.0.0-beta&prerelease

// Install Arch as a Cake Tool
#tool nuget:?package=Arch&version=2.0.0-beta&prerelease

Arch Discord Maintenance Nuget License C#

A high-performance C# based Archetype & Chunks Entity Component System (ECS) for game development and data-oriented programming.

  • 🏎️ FAST > Best cache efficiency, iteration, and allocation speed. Plays in the same league as C++/Rust ECS Libs!
  • 🚀 FASTER > Arch is on average quite faster than other ECS implemented in C#. Check out this Benchmark!
  • 🤏 BARE MINIMUM > Not bloated, it's small and only provides the essentials for you!
  • ☕️ SIMPLE > Promotes a clean, minimal, and self-explanatory API that is simple by design. Check out the Wiki!
  • 💪 MAINTAINED > It's actively being worked on, maintained, and comes along several Extensions!
  • 🚢 SUPPORT > Supports .NetStandard 2.1, .Net Core 6 and 7, and therefore you may use it with Unity or Godot!

Download the package, get started today and join the Discord!

dotnet add PROJECT package Arch --version 1.3.0-alpha

⏩ Quickstart

Arch is bare minimum, easy to use, and efficient. Let's say you want to create some game entities and make them move based on their velocity... sounds complicated? It's not! Arch does everything for you, you only need to define the entities and the logic.

I bet you don't want to read tons of documentation, theory, and other boring stuff right?
Let's just ignore all that deep knowledge and jump in directly to get something done.

using Arch;

// Components
public record struct Position(float X, float Y);
public record struct Velocity(float Dx, float Dy);

// Create a world and an entity with position and velocity.
using var world = World.Create();
var adventurer = world.Create(new Position(0,0), new Velocity(1,1));

// Enumerate all entities with Position & Velocity to move them
var query = new QueryDescription().WithAll<Position,Velocity>();
world.Query(in query, (Entity entity, ref Position pos, ref Velocity vel) => {
    pos.X += vel.Dx;
    pos.Y += vel.Dy;
    Console.WriteLine($"Moved adventurer: {entity.Id}"); 
});

[!NOTE] The example is very simple. There more features including queries without lambda or an API without generics and much more. Checkout the Documentation!

💡 Highlights

This is all you need to know, with this little knowledge you are already able to bring your worlds to life.
However, if you want to take a closer look at Arch's features and performance techniques, check out the Wiki! There's more to explore, for example...

🤝 Our promise

  • Bare minimum - No overengineering, no abstracted hidden costs
  • Incredibly fast and efficient
  • Is actively maintained and developed
  • Grateful for every contribution

🚀 Features

  • Archetypes with 64KB large chunks for your massive worlds
  • Incredibly small Entity size
  • Optional Pure-ECS for maximum performance and efficiency
  • Bulk/Batch Entity operations
  • High-performance Queries
  • Multithreaded Queries
  • Enumerators
  • CommandBuffers
  • Events
  • Generic and Non-Generic API
  • AOT friendly
  • Several extensions with systems, tools, source generators and more
  • Monogame, Unity, Godot Integration guides
  • And much more...

🧩 Extensions

Arch has some extensions that add more features and tools. Among them for example :

  • 🛠️ Arch.Extended > Adds a set of tools and features to save boilerplate code!
  • 🔎 Godot Entity Debugger > An Arch Entity debugger for the Godot engine!
  • 🔎 Stride Entity Debugger > An example of Arch in the Stride engine, with additional entity and system inspector!
  • 🔎 Arch.Unity > A library that makes the integration of Arch in Unity much easier, with many cool new features!
  • 🔎 Zinc-Framework > A small but fine engine framework which is based on Arch and also has its own source generator to define entities declaratively!
  • ❓ Your Tool-Library? > If you develop more tools and features for Arch, let us know and we'll list them here!

🚀 Performance

Arch is already one of the fastest ECS and uses the best techniques under the hood to achieve maximum performance and efficiency. Care is always taken to find a healthy balance between CPU performance and ram utilization.

If you are more interested, have a look at the benchmark!

📖 Documentation

Were we able to convince you? If so, let's get started. We have prepared a whole wiki to explain all the important aspects and provide examples. Click here for the documentation!

💻 Projects using Arch

Arch is already used in some projects, for a more detailed look, take a look at the wiki!

Space Station 14

Space Station 14 is inspired by the cult classic Space Station 13 and tells the extraordinary story of everything that can go wrong on a shift at a space station. You take on a role and complete your tasks so that the space station doesn't go to the dogs... or do the exact opposite. Prepare yourself for chaos and the finest roleplay. Best of all, SS14 is open-source and anyone can play! Ingame screenshot

Roguelite-Survivor

An action-packed c# clone of the hit "vampire survivor" based on monogame and arch! Fight your way through hordes of different enemies, level up your character, collect permanent items and explore various maps! Try it out! Ingame screenshot

EquilibriumEngine-CSharp

Equilibrium Engine is a data-oriented C# game engine that takes advantage of ECS pattern followed by Hot-Reloading of your libraries which allows you to quickly iterate on different aspects of your projects. Equilibrium Engine screenshot

Contributors

<a href="https://github.com/genaray/Arch/graphs/contributors"> <img src="https://contrib.rocks/image?repo=genaray/Arch" /> </a>

A huge thanks to all the supporters who did their part, especially TwistableGolf for their dedication and design of the official Arch logo and banner!

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed. 
.NET Core netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.1 is compatible. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (5)

Showing the top 5 NuGet packages that depend on Arch:

Package Downloads
Arch.Persistence

A Persistence-Framework for Arch.
Arch.Relationships

Simple Entity-Relationships for Arch.
Undine.Arch

Package Description
Doprez.Stride.Arch

A package of helper classes for using Arch ECS in Stride3D
PdArchEcsCore

PdArchEcsCore description.

GitHub repositories (4)

Showing the top 4 popular GitHub repositories that depend on Arch:

Repository Stars
JasonBock/Rocks
A mocking library based on the Compiler APIs (Roslyn + Mocks)
genaray/Arch.Extended
Extensions for Arch with some useful features like Systems, Source Generator and Utils.
nuskey8/Arch.Unity
Arch ECS integration for Unity.
Doraku/Ecs.CSharp.Benchmark
Benchmarks of some C# ECS frameworks.
Version Downloads Last updated
2.0.0-beta 32 3/11/2025
1.3.3-alpha 2,264 8/15/2024
1.3.2-alpha 82 8/14/2024
1.3.1-alpha 119 8/13/2024
1.3.0-alpha 386 8/12/2024
1.2.8.2-alpha 578 7/22/2024
1.2.8.1-alpha 1,640 4/19/2024
1.2.8 10,695 3/13/2024
1.2.7.1-alpha 616 11/20/2023
1.2.7 3,382 10/15/2023
1.2.6.8-alpha 401 9/17/2023
1.2.6.7-alpha 184 8/27/2023
1.2.6.6-alpha 3,617 8/25/2023
1.2.6.5-alpha 749 8/19/2023
1.2.6.4-alpha 162 8/14/2023
1.2.6.3-alpha 91 8/14/2023
1.2.6 695 8/13/2023
1.2.5.3-alpha 572 5/21/2023
1.2.5.2-alpha 176 5/16/2023
1.2.5.1-alpha 304 5/11/2023
1.2.5 881 4/26/2023
1.2.4.2-beta 115 4/16/2023
1.2.4 444 4/15/2023
1.2.3 236 3/19/2023
1.2.0 224 3/5/2023
1.1.9 218 1/29/2023
1.1.8 141 1/29/2023
1.1.7 143 1/29/2023
1.1.6 169 1/19/2023
1.1.5 139 1/18/2023
1.1.4 149 1/16/2023
1.1.3 145 1/16/2023
1.1.2 138 1/16/2023
1.1.1 504 12/30/2022
1.1.0 159 12/20/2022
1.0.17 138 12/9/2022
1.0.16 260 12/4/2022
1.0.15 136 11/27/2022
1.0.14 135 11/23/2022
1.0.13 138 11/22/2022
1.0.12 130 11/20/2022
1.0.11 133 11/15/2022
1.0.10 133 11/15/2022
1.0.9 145 11/13/2022
1.0.8 166 11/6/2022
1.0.7 139 11/4/2022
1.0.6 127 11/4/2022
1.0.5 138 11/2/2022
1.0.4 121 11/1/2022
1.0.3 127 11/1/2022
1.0.2 124 11/1/2022
1.0.1 144 11/1/2022
1.0.0 190 11/1/2022

- Major Rework
- Added several new features
- Improved speed
- Breaking or major changes