Unicode and HTML with detectable errors. Currently, Gecko browsers such as Firefox, abide to this rule, whereas the bulk of the other common browsers that support HTML as XML, such as Webkit browsers (Chrome/Safari) do allow the encoding of XHTML documents to be manually overridden. Many browsers are only capable of displaying a small subset of the full Unicode repertoire. Here is how your browser displays various Unicode code points: Some web browsers, such as Mozilla Firefox, Opera, Safari and Internet Explorer (from version 7 on), are able to display multilingual web pages by intelligently choosing a font to display each individual character
Construct (game engine) allowing for more complicated behaviors to be created. Construct's primary export platforms are HTML5 based. It claims support across Google Chrome, Firefox, Internet Explorer 9+, Safari 6+ and Opera 15+ on desktop browsers, and support for Safari in iOS 6+, Chrome and Firefox for Android, Windows Phone 8+, BlackBerry 10+ and Tizen. Additionally, Construct can export to several online marketplaces and platforms, including Facebook, the Chrome Web Store, the Firefox Marketplace, the Amazon Appstore, Scirra's own Arcade and Kongregate. Construct has the ability to export to several platforms that provide offline and native application behavior: Windows, OS X and both