Since I was gifted a Pi 3 during the holidays, I'm looking for premade images using RetroPie.

I've found some fantastic ones, but something I do not understand is this: if most gameso n a system cannot be well emulated, why do they include them? That's wasted space for games that were not included that work flawlessly.

But so far, I've downloaded some 128GB images and they are awesome. One in particular is Virtualman 12GB 2.0 image. Very nice presentation.

What images do you guys use? Please don't post links to obtain them as they contain ROMS. But I would think the name would be ok, right?