You have "some ideas" for "some simple game projects"? That doesn't sound like a startup...that doesn't even sound like a project. Unless you have a very clear vision of exactly what it is you're wanting to do, you're going to have a hard time getting anyone to part with their money. If Tim Schafer has "some ideas", I'd give him money for sure....but unless you're proven, your ideas count for zip. It's the execution that counts.
A startup is a business searching for a business model that scales. A startup isn't a couple of guys with a few ideas that may or may not work.
If you have some awesome ideas, the best way to get money is to work on your idea until it is at a point where someone can see potential in it. It costs literally nothing to start working (providing you have the tools, which I'll assume you do). But it sounds like you're asking for people to put money in to...well...nothing.
Finally, if your idea of a project you and a few guys can work on, I'd suggest something a little less epic than "3D Sandbox mmorpg with really huge world designed and lot of monsters, characters and even own language for in game characters."