I want to start an online browser game following all laws.
A few days ago I heard of COPPA - Children's Online Privacy Protection Act. In this link, they clearly explain in all details what must be done, and what kind of website must comply. As a person that knows (absolutely) nothing about law, I am glad to find this right-to-the-point text that tells me exactly what to do.
My question is, how do I find out if there are other things like this to follow? I am glad I heard of COPPA, otherwise I would have no idea I had to follow it. I am now worried that there might be other laws to follow that I don't even know they exist.
How to make sure I am following everything that must be followed? Is there some kind of "list"? I am using COPPA just as an example - I don't want to be restricted only to privacy laws. The thing is, I can't even dream of what other laws could exist. (I'm lucky to have found COPPA)
I am brazillian, the website would be hosted in Brazil. But I would like people from other countries to be allowed to play as well. (I don't know if this matters)
If you really need to know more details about the game to properly answer this question, let me know and I will add them - but I was hoping to a more general answer first, so I can analyse them myself and decide what is needed and what is not. I am not sure if this question is too-broad the way it is now - if it is, I will add the details.
EDIT: I don't think this question is a duplicate from Where can I find a comprehensive document of computer laws?. Even though its title suggests that, both answers only refer to security and hacking. I am talking about the content of my website, and I am not "hacking" anyone nor doing anthing close to that.
EDIT 2: Just to clarify, I do not expect someone to show up with a complete list and solve my problem like magic. The thing is, as of now I have not the slightest idea of how to proceed.
I mean, (at least the majority of) existing MMO browser games (like Clash of Clans, Neopets, Club Penguin, OGame and such) must have done something to make sure they comply with all needed laws.