Seeing is beliving!
And you can try it too!
GBerry Wiki on repository provides more details for installing and running GBerry and example games. This page below provides you a quick overview.
You can post issues and proposals also to GBerry issue tracker.
Game platform source code can be found from Github.
Game platform and and mobile client are implement with C++ and Qt. With help of Qt we will be able to support different mobile device brands and also make possible to develop games on Linux, Windows and Apple.
GBerry is currently under prototype development and during that time core team supports only Android mobile devices. However capable developers could compile GBerry mobile client software quickly for other platforms as well.
The game platform running on Raspberry Pi is released as open source software and licenced under LGPLv3.
You can find game platform source codes from Github: https://github.com/gberryproject/gberry
Some building blocks of GBerry webstore are FIWARE enablers and those are also available as open source. The server side business logic is currently closed source. However the goal is to have standard API to webstore, so that in can be replaced with wanted service.
Game developers can decide how they want to publish their games: open or closed source. In both cases GBerry provides tools to monetize their work.