Ada Engine

Free plan iPhoneLinuxMacWindows

What Ada Engine is

Ada Engine is a free, MIT-licensed, open-source engine for Swift developers building 2D and 3D games. It runs on Windows, Linux, macOS, and iOS, with an Ada plan listed as free and no royalties or runtime fees. AdaScript gameplay scripts use the Gravity language runtime and integrate with Ada ECS; Rust is listed as a scripting language. 3D development includes scenes, cameras, materials, lighting, skyboxes, extensible render pipelines, and Box3D physics for rigid bodies, collisions, and constraints. The 2D renderer supports real-time output, custom shaders, materials, and render pipelines, while Box2D v3 provides parallel 2D physics calculations. A custom UI engine follows a SwiftUI-like approach for Ada scenes, and render graphs let developers construct their own rendering pipeline. The Mac download is a native editor. Windows and Linux installers are coming soon, with source code offered.

Who it suits

It suits Swift developers who want an open-source engine for 2D or 3D games. It also fits users seeking MIT licensing, editable source, and no royalty or runtime fees.

What it does well

Free MIT-licensed engine with no runtime fees
Supports 2D and 3D rendering
Includes Box3D and Box2D v3 physics
Custom UI engine fits Ada scenes
Render graphs allow custom pipelines

What to know first

Windows and Linux installers are coming soon
Desktop installers are released as available
Windows and Linux downloads currently offer source code

Plans

Plan	Billed and limits	Price
Ada	100% free; no royalties or runtime fees · MIT licensed · Desktop installers are released as available	Free

As adaengine.org lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

Ada Engine provides broad 2D and 3D game-building tools under the MIT license, including physics, scripting, UI, and customizable rendering. macOS and iOS workflows are described, while Windows and Linux installer availability is still pending.

Facts from Ada Engine's own pages

2D physics: Ada supports Box2D v3 physics with parallel calculations, lightweight memory usage, and fast simulation. · adaengine.org, 12 Oct 2026
2D renderer: The 2D renderer supports real-time rendering, custom shaders, materials, and render pipelines. · adaengine.org, 12 Oct 2026
3D physics: The integrated Box3D physics engine simulates rigid bodies, collisions, and constraints in 3D. · adaengine.org, 12 Oct 2026
3D rendering: The engine supports 3D scenes with cameras, materials, lighting, skyboxes, and extensible render pipelines. · adaengine.org, 12 Oct 2026
AdaScript: AdaScript gameplay scripts use the Gravity language runtime and integrate with Ada ECS. · adaengine.org, 12 Oct 2026
Free plan: Yes · adaengine.org, 24 Sept 2026
iOS: The download page says users can create and run AdaScript projects on iPad. · adaengine.org, 12 Oct 2026
License and fees: Ada is MIT licensed and described as free to use, modify, and learn with, without royalties or runtime fees. · adaengine.org, 12 Oct 2026
Linux: The download page says the Linux installer is coming soon and offers source code. · adaengine.org, 12 Oct 2026
Mac: The Mac download is a native editor for building with AdaScript and Swift. · adaengine.org, 12 Oct 2026
Render graphs: Users can construct their own render pipeline using render graphs. · adaengine.org, 12 Oct 2026
Scripting languages: Rust · adaengine.org, 24 Sept 2026
Source code model: open_source · adaengine.org, 24 Sept 2026
UI: Its custom UI engine uses a SwiftUI-like approach designed to fit into Ada scenes. · adaengine.org, 12 Oct 2026
What it is: Ada is an open-source engine for Swift developers to build 2D and 3D games. · adaengine.org, 12 Oct 2026
Windows: The download page says the Windows installer is coming soon and offers source code. · adaengine.org, 12 Oct 2026

Where Ada Engine stands on Freedom251

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