If i own a PS2 and a certain game, is it legal that i emulate this certain PS2 game on my PC?

Ask a lawyer. ;)

Arguably you should be fine if you use your original disk and a copy of any required console firmware that you have personally dumped (not something you found on the internet).

It's difficult to say, but realistically, does it even matter? We're still not sure how much EULAs can hold up in court.

Here's my stance: If you own the game for yourself, and you aren't giving away free copies to other people, and you only want to play the game on your PC, then just do what you have to do. You won't be hurting the games industry.

The legality of emulators depends on whether they use copyrighted code from the console, and whether you have the right to use that copyrighted code in the emulator.

Nintendo and Sony are notorious for suing over emulators. Sony lost a number of these cases, because the defendants (Connectix, Bleem) proved they used "clean room" development to produce functioning emulators without copying any Sony code.

If you do own the console, you can dump the BIOS from your console to use in an emulator. This is what you do to set up PCSX2, for example. But you can't use a BIOS copied from anybody else's console; that's flatly copyright infringement.

The same goes for downloading a game you already own. The license of the game is tied to the physical copy of the game. So you have to either rip the disc or have it in your drive. But depending on local laws, even ripping the disc could be considered piracy.

That all said and done. Who the F cares? Last time I checked, copyright infringement wasn't a top prrority for turkish courts. And when it comes to the PS2, I think nobody bothers tracking torrents, etc. anymore.

I dont think he was talking about downloading the game, which is obviously illegal. And its kind of pointless in my opinion, PS2 games are dirty cheap now.

Right; he is talking about a game he owns and a PS2 he owns. This is exactly the condition where nobody can fault you for using an emulator. Get PCSX2, extract and install the BIOS from your PS2, and Bob's your uncle :)

Ok what about old selling ROMS? For example SNES is not produced anymore. Can a company sell the SNES ROM's with an emulator? Maybe GOG? What is the stance of companies?

I mean there is a possibility. People are doing it without paying money. With this way companies can get money. Why they don't sell old console games in digital format with emulators(NES, SNES, Saturn, Dreamcast, N64, PS1 etc...)

If you own a physical copy of the game then you have the right to Emulate it however you want it

Not without a licencing arrangement from the developer and probably the company that made the console as well. So in other words, the same situation as selling other games (with the added emulator licencing).

The fact that the SNES isn't produced any more doesn't make the games public domain.

What companies end up doing is creating remakes of certain classic titles for whatever the current console or handheld systems are out. Then when the next generation of consoles and handhelds come out they do the same thing again. And again. And again. They don't release a version for the PC because then all people would need is that one version, rather than buying version after version for each console and handheld generation. Basically it's the same reason why we don't have many other nice things: because the people in charge are a bunch of greedy wankers.

Third party SNES games may have some Nintendo IP in their code. Nintendo may be obstructing a general release in favor of one of their platforms. There's probably not enough money involved to be worth rewriting the games unless you're Squenix.

Just as Valve do not release their games on anything but Steam, Nintendo doesn't like their games on anything not made by Nintendo. It's sad though...

Ok, here's the thing. There's already a company that sells old SNES games prepackaged with an emulator under an arrangement. That company is Nintendo. What you and others keep mentioning is something that is already done through the Wii Virtual Console (or the PS1 section of PSN, or the Xbox Classics section of XBL marketplace).

The reason nobody sells these games anywhere else is because Nintendo doesn't make and sell PCs, they make and sell Wiis. So they only have an interest in providing emulation to consumers buying their products. Financially it makes zero sense for Sony to arrange to distribute PS1 games through GOG when they can distribute them through PS3 sales and build up a larger consumer base and a feature bullet point for their product. I know plenty of people who bought a Wii to play older games cheaply.

So GOG or anyone else expanding into emulated console releases is a completely ridiculous idea that will never ever happen while Nintendo/Sony/Microsoft still manufacture consoles.

Pre-edit: "Dead" console companies like Sega obviously excepted. I wouldn't be surprised to find Genesis or Dreamcast games on here one day.