Hi, we are an Ukrainian team who develop a new MMORPG. Right now we are only at startup part of the project, but we look farther and have a problem which need to be solved somehow. The question is do we need some legal permissions and from who(association or something) to publish MMORPG on European and USA market. Any suggestions will be very helpful.

Thanks, Timur.

What's the platform, Timur?

You don't need any permission to publish any game on the EU market, (and i'd be surprised if it was needed for the US market).

If you wish to sell your game in a 20th century store you probably have to get your game rated (AFAIK it is not required by law in the EU or the US but most stores will simply refuse to sell unrated games to avoid getting complaints from angry parents).

if you intend to run a business you will most likely have to register for taxes in the country you're operating in. (Check with your local tax authorities). and as always when doing business it is a good idea to contact a lawyer to make sure you're not doing anything wrong.