I’m a bit late with this, but I backed the Makerbuino on Kickstarter, the campaign already succeeded.
It’s scheduled to arrive some time in May. I’m very excited to try myself at C++ and game programming and the Arduino platform, it’s like clapping two flies at once. I got kinda overwhelmed with learning C++ and 3D graphics programming at once and think the limitations of the platform might actually help me a lot to progress faster by letting out the 3D and graphics issues. Will also be a great challenge to squeeze the content into the tiny RAM, fortunately there are already a lot of example games that are FLOSS, so there is a lot to learn from.