Duality is a plugin based 2D game development framework using C# and OpenTK. One of its main features is the WYSIWYG editor, which lets you playtest and edit your game seamlessly within the integrated sandbox.

Engine Features

  • Plugin Architecture
    Easily introduce game logic via plugin
  • Component Based Design
    Allows your own code to blend in seamlessly
  • Base Infrastructure
    Rendering, Audio, Physics, User Input, ...
  • Content Management
    Takes care of all your game resources

Editor Features

  • Live Editing
    Preview and Test directly in the editor
  • Hot-Reload Resources
    Modified Assets are automatically reloaded
  • Hot-Reload Plugins
    Write code and test it directly without restart
  • Modular Design
    Tailor the editor exactly to fit your game

To learn more about the engine, please visit the project page.

Besides the github project overview and documentation, there is also a developer blog. If you want to contribute to the project, be it by active development, documentation or testing, you should pay a visit to the community forums. The same applies to any questions or suggestions - feedback is always welcome! However, bugs and feature requests that do not require further discussion should be filed in the issue tracking system, directly on github.

Latest binary release: Dualitybin.adamslair.net

Fork / Contribution Guide: How to Contribute
Donate: via Paypal or on itch.io

Getting Started


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Adam's Lair
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Latest tweets from @adams_lair

Know a #csharp array pooling implementation? Please reply with a link! Also interested in how it is used, not exclusively #gamedev

Aug 13 2017

RT @bgolus: I just published “Anti-aliased Alpha Test: The Esoteric Alpha To Coverage” Medium.com

Aug 12 2017

RT @ondrejbalas: Had a GREAT time debuting Open Source C# Game Dev w/ #Duality2D at #KCDC!!! Slides Slideshare.net and Code T.co

Aug 5 2017

RT @ondrejbalas: I'm somewhere! And at 3:30 I'll be in 2211 talking about Game Development in C# with #Duality2D! #OndrejAlert #KCDCT.co

Aug 4 2017

Clickbait flagging / filtering based on #MachineLearning as an opt-out browser feature?

Jul 16 2017

RT @EricLengyel: Do you have a TTF file that works in the OS but breaks some other software? Send it to me for testing!

Jul 7 2017

Another use of v3.0 rendering improvements: Can now specify target size in the Game View. #gamedev #Duality2D Gfycat.com

Jul 2 2017

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