Impact runs on all HTML5 capable browsers: Firefox, Chrome, Safari, Opera and (behold) even Internet Explorer 9. Of course this also includes the iPhone, iPod Touch and iPad.
Impact comes with the versatile Weltmeister Level Editor that lets you create your game worlds with ease. Whether it's for a side-scrolling Jump'n'Run or a top-down RPG – Weltmeister is up to the task.
All your entities (enemies, NPCs, triggers etc.) can be instantly used in Weltmeister and you can connect entities with each other to create logic chains: find button, open door.
With the Ejecta Framework you can easily publish your HTML5 Games in the iPhone AppStore with perfect sound, Multitouch and almost native performance.
With your Impact license you will also get access to AppMobi's GameDev XDK. The XDK allows you to easily create and package native Apps for Android and iOS and provides a lot of cloud services.
An easy to use Debug Menu helps you find performance bottlenecks and see what exactly is going on in your game at any time.
The documentation for Impact answers all your questions and more. A growing list of video tutorials and articles as well as a detailed Class Reference with lot's of example code will help you develop your first HTML5 Game today!
Jesse Freeman's Introducing HTML5 Game Development walks you through the whole process of creating a game with Impact. It covers everything from setting up your working environment to packaging your game for release.