If you want to just jump to the product page, there’s plenty of info there.
Otherwise, I’ll give you a brief description of what it is here. The Game Pie Advance (GPA), as you may already know, is a project we’ve been working on to allow you to put the RetroPie Linux distribution on your Raspberry Pi Zero and fit it all inside of a GBA shell. The end result should mostly look and feel like a GBA, but it will be running a system made for emulation.
If you don’t already know about RetroPie, you should probably head over to their page and learn a bit about it. https://retropie.org.uk/
As far as this pre-sale goes, we are collecting orders now, so we can purchase PCBs, LCDs, and other parts. We are also engineering in a couple new main features like battery charging and the option to add X/Y buttons. See the GPA DIY preorder page for more info about all that stuff.
Also, I’d like to ask for your help a bit here. As we’re trying to “kickstart” this version 2 kit with help from preorders, I’d be awesome if you could share links to this project wherever you might think it’s appropriate.