The O2 Engine, based on HTML5, works on Windows, Mac, iPhone, iPad and Android devices.
The O2 Engine boasts compatibility with Japan's most famous novel game engine KiriKiri, and can interpret KAG scripts.
As the O2 Engine works purely off HTML5, it is possible to run novels on modern browsers, even on mobile devices without the need for any third party applets such as Flash. This allows the engine to function on any modern browser, without the need for further extensions.
Novels created on the O2 Engine not only function in a browser, but can be packaged as an application for iOS, Android, Windows and Mac.
This is a sample novel created on the O2 Engine.
Through the use of the iframe tag,
it is possible to paste the game on any web page.
Currently the O2 engine is specially licensed by Novelsphere. As long as the novel is published on the NovelSphere website, it is possible to download the SDK, and release/sell produced games for free.
In order to use the O2 Engine on a personal platform (such as your own web page), or to release a game packaged as an application without releasing it on the NovelSphere website, a paid license is required.
|Function||Free Plan||Paid plan|
|Access to the SDK and related documents|
|Type of release permitted||NovelSphere only*1||No limitations on release|
|Implementation of the engine into other programs|
|Packaging as an application for Windows/Mac||partially possible*2|
|Packaging as an application for iOS/Android||partially possible*2|
|Technical support||Access to the support forum|
*1 It is possible to place a novel which has been uploaded to the NovelSphere website, on your own website. It will appear like the 'Interactive Sample' section does on this page.
*2 It is possible to package novels which have been released on Novelsphere, as Windows, Mac, iOS and Android applications if they are exclusively released within NovelSphere. However in the case of packaging a novel as an application outside of NovelSphere, a paid license is required.
The following are platforms or novel games which use the O2 Engine in their production or release.