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Solar2D

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Build cross-platform 2D games with a fast, open-source, Lua-based engine.

Game EnginesDeveloper ToolsCross-Platform Mobile
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Tracked since2026
0 reviews tracked

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Completely free with no royalties or hidden fees

Biggest con

Relies on Lua, which might require learning a new language for some developers

TL;DR - Solar2D

  • Open-source, Lua-based 2D game engine.
  • Cross-platform development for mobile, desktop, and web.
  • Completely free with no hidden fees or royalties.
Pricing: Free forever
Best for: Individuals & startups

What is Solar2D?

Editorial review
Solar2D is a powerful and completely free 2D game engine, forked from the well-established Corona SDK. It focuses on ease of iteration and usage, allowing developers to build games for a wide range of platforms including iOS, Android, macOS, Windows, Linux, and HTML5 from a single codebase. The engine leverages Lua, a lightweight and fast scripting language popular in game development, making it accessible for both new and experienced developers. Designed for efficiency, Solar2D features an instant-update simulator and live builds, enabling rapid testing and deployment. It offers extensive plugin support for functionalities like in-app advertising and analytics, and allows integration with native libraries for advanced customization. Being open-source under the MIT license, it fosters a strong community and ensures transparency, making it a production-ready solution for indie developers and large publishers alike, without any hidden fees or royalties.

Available on: iOS, Android, macOS, Windows, Linux

how we evaluateSourcesolar2d.com ↗

Pros & Cons

Pros

  • Completely free with no royalties or hidden fees
  • Fast iteration and development with instant updates
  • Supports a wide range of platforms from a single codebase
  • Strong community support and open-source nature
  • Production-ready, based on a mature engine (Corona SDK)

Cons

  • Relies on Lua, which might require learning a new language for some developers
  • Primarily focused on 2D games, not suitable for 3D projects
  • Development is community-sponsored, which might impact long-term stability without consistent funding

Key Features

Cross-platform development (iOS, tvOS, Android, Android TV, macOS, Windows, Linux, HTML5)Instant-update simulatorLive builds for rapid testing on devicesExtensive plugin ecosystem (in-app advertising, analytics, media)Native library integration (C/C++/Obj-C/Java)Lua-based scriptingOpen-source (MIT license)Privacy-aware (no tracking or data gathering)

Pricing Plans

Pricing checked Aug 1, 2026

Completely free

Free

  • No hidden fees, charges, or royalties
  • Cross-platform development (iOS, tvOS, Android, Android TV, macOS, Windows, Linux, HTML5)
  • Fast build and instant-update Simulator
  • Live Builds
  • Numerous plugins for in-app advertising, analytics, media, etc.
  • Call any native library (C/C++/Obj-C/Java) using Solar2D Native
  • Production ready (fork of Corona SDK)
  • Lua-based
Calculate your costView full pricing

Is Solar2D worth the price?

100/100

Solar2D offers an incredibly generous pricing model, as it is completely free with no hidden fees or royalties.

This makes it an exceptionally fair and accessible option compared to most game engines on the market. It's best for independent developers, hobbyists, and small studios looking to create 2D games without any financial barriers.

Hidden Costs & Gotchas

Potential costs for third-party plugins

Development time for custom native libraries

Marketing and distribution costs

Hardware for development and testing

How Solar2D Compares to Competitors

Compared to engines like Unity and Unreal Engine, which offer free tiers but often include royalty structures or feature limitations for commercial projects, Solar2D stands out by being entirely free and open-source. GameMaker Studio 2, another 2D engine, has a free trial but requires paid licenses starting around $39/year for exports, making Solar2D significantly more cost-effective.

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Best Solar2D Alternatives

Top alternatives based on features, pricing, and user needs.

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PhaserFreemium

Fast, fun, and free 2D game framework for desktop and mobile web browsers.

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Solar2D vs UnityHead-to-head: features, pricing, who winsSolar2D vs DefoldHead-to-head: features, pricing, who winsSolar2D vs PhaserHead-to-head: features, pricing, who wins

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Solar2D FAQ

How does Solar2D facilitate rapid game development?

Solar2D enables fast iteration and development through its instant-update simulator and live builds. This allows developers to quickly test changes and deploy their games across various platforms efficiently.

Which platforms can games built with Solar2D target?

Games developed using Solar2D can target a wide array of platforms, including iOS, Android, macOS, Windows, Linux, and HTML5. This broad compatibility is achieved from a single codebase.

How is Solar2D priced?

Solar2D is completely free to use, operating under an MIT license. There are no royalties, hidden fees, or paid plans required to develop and publish games with this engine.

What kind of user or team is Solar2D best suited for?

Solar2D is well-suited for both indie developers and large publishers looking to create 2D games. Its open-source nature and ease of use make it accessible for developers of varying experience levels.

How does Solar2D compare to Unity for 2D game development?

Solar2D is specifically designed for 2D game development and is completely free with no royalties, while Unity supports both 2D and 3D projects and has different pricing models. Solar2D leverages Lua for scripting, which offers a lightweight and fast development experience focused on 2D.

What are the primary limitations of using Solar2D?

A primary limitation of Solar2D is its exclusive focus on 2D games, making it unsuitable for 3D projects. Additionally, its reliance on Lua may require some developers to learn a new programming language.

Can Solar2D integrate with external services or libraries?

Yes, Solar2D offers extensive plugin support for functionalities such as in-app advertising and analytics. It also allows for integration with native libraries, providing advanced customization options for developers.

Source: solar2d.com

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