So while I was out and about a few weeks ago I stumbled upon a pawn shop that had these strange looking game cartridges. they were very small and ovular (Egg shaped maybe?), very thin (only about the thickness of ~4 dimes stacked up), and had a screen that appeared to be LCD in the cartridge itself (it obviously needs some system to play them). the screen was probably only 2 - 2.5 inches and each cart had the name of the games above the screen (the ones there were very generic names and I don't remember them). on the back side there appeared to be some sort of clip that stuck straight out from the center of the cartridge (possibly to hold it into whatever actually played it) and the pins were barely exposed out of the bottom of it. It also gave the impression that it was heavily marketed towards kids (like a leap frog or some such thing) but I can not be for certain on that one. the strangest thing was that I could not find any company information on it (it was not logo'ed, there was no plastic molding for the company name that I can remember, nothing)
I tried searching online for this kind of cartridge and nothing popped up so I thought I would place it on here to see if anyone knows. I never took a picture of it but would know it if I looked at one.
thanks for any help guys!