No analogue stick, so a significant number of Dreamcast, PSP and N64 will be directly affected. It probably has 8 buttons (4 face, 4 shoulder), but the video never shows anything other than the front. I'm basing this on the other models the company sells. Also, considering several other models come with 2 analogue sticks, I'd say this one is a pass, unless you want something that's easy to put in the pocket
BTW, the GBA SP form factor is already for sale as the RG35xx. From the looks of it, all these portables run EmuELEC