I have something similar, same games as the 20 in 1 but it looks like a crap little PSP. Qi Sheng Long makes some handhelds using the same hardware & same games too, I have no idea who developed them originally or what kind of hardware is really in there though.
The 14 in 1 seems to have games not found on any of the others - maybe that one uses different hardware?
Here's another with the 14 in 1 games:
http://baobaolong.en.alibaba.com/product/295433068-209733846/Mini_Colourful_Handheld_Game.htmlthey have different product numbers to the rest (MN-1 and MN-2 where everything else is BBL-something) so that does kind of imply there's something different going on with these two.