Phil69

Hmmm, although I can see that Retroarch downloaded a zip-file, I cannot find it anywhere to unzip it first...

I see...but although I downloaded it some minutes ago, it still says "Missing Core Files".

Ok, I downloaded the SEGA Genesis Plus GX...and now?

It is like it is...I know it sounds strange, but computers seems to don't like me and react strange.

Ok, but also Enter and Backspace are not always working....Can you help me to download the need core, please?

Ah, this could be the problem...I thought it has all cores in it (that's why you should use it for Launchbox). I try to navigate myself through Retroarch, but found it too difficult, because f.e. it doen't react on X and Z (like in the YouTube videos I watched)...

Yes, I do.

I am new to Launchbox, so I hope it's a simple one for you: I downloaded the Mega Drive games I played back in the days, but they simply don't start if I doubleclick on any of them. In fact, nothing happens when I click on an imported ROM. (I already read some threads here and about Retroarch, but still don't get it, because everything looks fine to me).