wpmudev about H5P
"H5P is not your average WordPress content plugin: it is a genuinely innovative way to create, embed and share rich HTML5 content via your WordPress site."
It is a really insightful post pointing out how the H5P approach to rich content is different from the traditional approaches today. If I create a game in H5P another user may copy my game to his website, modify it and publish his own version of it using his web browser.
"The potential of H5P is to revolutionize the creation, delivery and sharing of rich HTML5 content; the ability to create the content in one app and deliver it in another; the capability of sharing that content across multiple platforms without modification."