The reason I'm finding an investor is that because I don't have enough money for hosting and promotion and I'm planning to get a partner for graphics since I suck at that part. Thanks for those advises though.
Perhaps you can move the thread to
https://bitcointalk.org/index.php?board=12.0, and get a partner for developing the game first. It would be a lot easier for you to get investment and also attention after the game is basically done. Right now with just an idea, it could be hard to convince someone to invest in it.