Phaser is a fast, free, and fun open source HTML5 game framework. It uses a custom build of [Pixi.js](https://github.com/GoodBoyDigital/pixi.js/) for WebGL and Canvas rendering, and supports desktop and mobile web browsers. Games can be compiled to iOS, Android and native desktop apps via 3rd party tools. You can use JavaScript or TypeScript for development.
Along with the fantastic open source community, Phaser is actively developed and maintained by [Photon Storm](http://www.photonstorm.com). As a result of rapid support, and a developer friendly API, Phaser is currently one of the [most starred](https://github.com/showcases/javascript-game-engines) game frameworks on GitHub.
Thousands of developers worldwide use Phaser. From indies and multi-national digital agencies, to schools and Universities. Each creating their own incredible [games](http://phaser.io/games/).
This is the development branch, where we are building Phaser 2.5.1. Check the [Change Log](#change-log) to see what we've done so far. Or switch to the master branch for the current stable release.
As always, keep you eyes on the Phaser web site, and subscribe to our weekly [newsletter](#newsletter). You can also follow me on [Twitter](https://twitter.com/photonstorm) or chat to me in the Phaser [Slack](http://phaser.io/community/slack) channel.
There are also now more ways than before to help [support](#support) the development of Phaser. The uptake so far has been fantastic, but this is an on-going mission. Thank you to everyone who supports our development. Who shares our belief in the future of HTML5 gaming, and Phasers role in that.
Developing Phaser takes a lot of time, effort, and money. There are monthly running costs; such as the forum and site, which we maintain 100% ad-free. As well as countless hours of development time, community support, and assistance resolving issues. We do this out of our love for Phaser of course, but at the end of the day there are real tangible costs involved.
If you have found Phaser useful in your development life. Or have made income as a result of using it, and are in a position to support us financially, without causing any detriment to yourself, then please do. There are a number of ways:
* A monthly contribution via [Patreon](https://www.patreon.com/photonstorm).
* A [one-off donation](http://phaser.io/community/donate) via PayPal.
* Purchase any of our [plugins or books](http://phaser.io/shop).
If you would like to sponsor Phaser then please [get in touch](mailto:support@phaser.io). We have sponsorship options available on our GitHub repo, web site, and newsletter. All of which receive tens of thousands of eyeballs per day.
Every Friday we publish the [Phaser World](http://phaser.io/community/newsletter) newsletter. It's packed full of the latest Phaser games, tutorials, videos, meet-ups, talks, and more. It also contains our weekly Development Progress updates.
If you'd like to try coding in Phaser right now, with nothing more than your web browser, then head over to the [Phaser Sandbox](http://phaser.io/sandbox). You'll find Quick Start templates, and a user-friendly editor filled with handy code-completion features.
Our [Getting Started Guide](http://phaser.io/tutorials/getting-started) will get you up to speed quickly. From setting up a web server, to picking an IDE. After which read our [Making your first Game](http://phaser.io/tutorials/making-your-first-phaser-game) tutorial. Please work through this, no matter what your development experience, to learn how Phaser approaches things.
The single biggest Phaser resource is the [Phaser web site](http://phaser.io/news). You'll find hundreds of tutorials, with new ones added every week. Subscribe to the [Phaser World](http://phaser.io/community/newsletter) newsletter for a weekly links round-up.
Using **TypeScript**? [Game From Scratch](http://www.gamefromscratch.com/page/Adventures-in-Phaser-with-TypeScript-tutorial-series.aspx) has a great series of tutorials covering that.
Prefer **videos**? Zenva have an excellent [Phaser video course](https://academy.zenva.com/product/the-complete-mobile-game-development-course-platinum-edition/?a=13), with hours of great material.
Ever since we started Phaser we've been growing and expanding our extensive set of examples. Currently there are over 700 of them, with the full source code and assets available.
With 400 pages of content you'll find detailed articles, game development "Making Of" guides and tutorials. All were written using the latest version of Phaser, so you won't be learning any out-dated tricks.
[Phaser Editor](http://phasereditor.boniatillo.com/) is a brand new Eclipse based editor that offers lots of built-in tools specifically for Phaser developers. Handy features include Smart code auto-completion, built-in web server, documentation search, asset management, texture atlas creator, audio sprite creator, asset previews and lots more.
The [Game Mechanic Explorer](http://gamemechanicexplorer.com) is a great interactive way to learn how to develop specific game mechanics in Phaser. Well worth exploring once you've got your dev environment set-up.
### Mighty Editor - Visual Game Editor
[MightyEditor](http://mightyfingers.com/) is a browser-based visual Phaser game editor. Create your maps with ease, position objects and share them in seconds. It also exports to native Phaser code. Excellent for quickly setting-up levels and scenes.
Phaser is provided ready compiled in the `build` folder of the repository. There are both plain and minified versions. The plain version is for use during development, and the minified version for production. You can also create your own builds.
Phaser includes a grunt based build system, which allows you to strip out features you may not require, saving hundreds of KB in the process. Don't use any Sound in your game? Then exclude the entire sound system. Don't need Keyboard support? That can be excluded too.
Phaser was never written to be modular. Everything exists under one single global namespace, and you cannot `require` selected parts of it into your builds. It expects 3 global vars to exist in order to work properly: `Phaser`, `PIXI` and `p2`. The following is one way of doing this:
We appreciate this is just a band-aid, and not a proper use of modules, but please understand it was never built to be used this way. You're trying to fit a square peg in a round browserify-shaped hole, so compromises have to be made. Please don't open GitHub issues about it as we've no intention of changing Phaser at this stage of its life. Full module based development is being undertaken in Lazer, the next iteration of the Phaser framework.
Should you wish to build Phaser from source you can take advantage of the provided [Grunt](http://gruntjs.com/) scripts. Ensure you have the required packages by running `npm install` first.
Run `grunt` to perform a default build to the `dist` folder.
Thousands of [games](http://phaser.io/news/category/game) have been made in Phaser. From game jam entries, to titles by some of the largest entertainment brands in the world. Here is a tiny sample. You can find hundreds more on our web site.
Phaser requires a web browser that supports the [canvas tag](http://caniuse.com/#feat=canvas). This includes Internet Explorer 9+, Firefox, Chrome, Safari and Opera on desktop. iOS Safari, Android Browser and Chrome for Android are supported on mobile.
While Phaser does its best to ensure a consistent cross-platform experience, always be aware of browser and device limitations. This is especially important with memory and GPU limitations on mobile, and legacy browser HTML5 compatibility.
If you need to support IE9 / Android 2.x _and_ use P2 physics, then you must use the polyfill in the `resources/IE9 Polyfill` folder. If you don't use P2 (or don't care about IE9!) you can skip this.
Phaser is developed in ES5 JavaScript. We've made no assumptions about how you like to code, and were careful not to impose a strict structure upon you. You won't find Phaser split into modules, requiring a build step, or making you use a class / inheritance OOP approach. That doesn't mean you can't do so, it just means we don't _force_ you to. It's your choice.
If you code with [TypeScript](http://www.typescriptlang.org/) there are comprehensive definition files in the `typescript` folder. They are for TypeScript 1.4+.
The majority of Phaser development is now taking place within the [Lazer](https://github.com/photonstorm/lazer) project. Lazer is the name for Phaser version 3. The Phaser 2 branch will still be supported, and issues fixed, but most roadmap features have been migrated over.
[Lazer](https://github.com/photonstorm/lazer) is the next generation of the Phaser game framework, and was previously called Phaser 3. Using a completely ES6 base it is renderer agnostic, allowing for DOM, SVG, Canvas and WebGL rendering, across desktop and mobile web browsers.
You can read all about the philosophy behind Lazer [here](http://phaser.io/news/2016/01/phaser-in-2015-and-beyond) or join the Google Group [mailing list](https://groups.google.com/d/forum/phaser3-dev) where progress reports are posted. You can also follow progress in the [Phaser World](#newsletter) newsletter.
* The Loader has a new property `headers`. This is an object checked by XHR Requests, used to set the Request Header of certain file types. JSON and XML are pre-configured, but you can add to, or modify this property as required (thanks @stoneman1#2585#2485)
* Phaser now has support for Typings, the TypeScript Definition Manager. See the `typescript/readme.md` file for installation instructions (thanks @monagames#2576)
* The TilemapParser will now add more data when importing Image object types from Tiled. The extra data available is: image width, image height, and flags to see if the image is flipped either horizontally, vertically or diagonally (thanks @gotenxds#2564#2554)
* Group.getFurthestFrom and Group.getClosestTo has a new optional argument: `callback`. This allows you to apply your own additional filtering to the distance checks, ultimately influencing the selected child (thanks @LoneStranger#2577)
* Text.setText has a new optional argument `immediate` which will re-create the texture immediately upon call, rather than wait for the next render pass to do so (thanks @Scraft#2594)
* Polygon.contains would only work with non-flattened Polygon objects. It now works with both flat and non-flat Polygons.
* Graphics objects enabled for input would fail to do anything if a Phaser Polygon was given to the Graphics object (which it was in nearly all cases), as it wouldn't detect input correctly with flattened polygons (thanks @symbiane#2591)
Please note that Phaser uses a custom build of Pixi and always has done. The following changes have been made to our custom build, not to Pixi in general.
* Removed `_renderWebGL`, `_renderCanvas`, `getLocalBounds` and `getBounds` from PIXI.DisplayObject, as they were only there to pass ancient jshint rules.
- Before submitting a Pull Request run your code through [JSHint](http://www.jshint.com/) using our [config](https://github.com/photonstorm/phaser/blob/master/.jshintrc).
