PixlCross is coming to the North American Wii U eShop next week. It’s planned for PAL regions as well but you will have to wait for a while before it releases.
DiMola also commented on the possibility of a 3DS port. Below is what was said
“So the sticky situation with this is that we’ve built PixlCross on top of the Nintendo Web Framework. Unfortunately, that makes porting it to other console platforms a bit tough. Natively, the game runs in a browser, so it’s easy to port to PC/Mac/Linux. If we start talking about the 3DS, it means rewriting the game in native code, which is not something that’s currently within my capabilities.
The New 3DS would be a more likely target for us, but it still means a total rewrite in Unity. Unity would also give us the flexibility to bring the game to other platforms like the PlayStation 4 and the Xbox One. All of that’s a longwinded way of saying, we’re thinking about it. If we do pretty decently on the Wii U, it’ll make the rewrite in Unity seem much more appealing!”