See, ill register a bussiness name to promote my game and get oficial license developer for a big company (Nintendo, Microsoft or Sony)
Certainly once your company gains a reputation for developing good games will a company name help its sales; but before then it is just another name. Just remember that those three companies can pick and choose who they will give their Software Development Kits to, and even then it is likely to cost you a certain amount of money. They don't just give it to anybody, even if they have registered a company name. Companies should be formed to protect the owners from certain liabilities. For example, if you plan to outsource some work then you probably want to sign using your company name and not your personal name. Also, spelling and grammar is going to be important. Who ever is going to read your emails is going to think your some 12 year old kid.
Can i register my name with my Home Address?
Depends on your state, but I don't believe company registration depends on a commercial zoned property. After all, you have people who work from home as their normal day job.
Will this affect my Home Ensurance?
It can affect insurances. For example, if you were to seek for any insurance or liability against lost of data or theft, you may need to install house alarms and fire extinguishers. It depends on your insurance policies which you will need to discuss with your insurance agent. Then there's the aspect of figuring out what belongs to you personally and what belongs to your new company.