I don't get why you would invest your money into it? You have more than enough money to retire for life. Get a nice house, add solar power, get your water out of the ground, make your living expense low but with quality. THAN start putting the most valuable thing into your idea/startup: Your Time. When you have something good enough, to show, find investors. IF your idea is good enough and it is relevant enough, you…
> THAN start putting the most valuable thing into your idea/startup: Your Time. When you have something good enough, to show, find investors. IF your idea is good enough and it is relevant enough, you get help from others. If not, yeah forget it. He may need work done that's beyond his skillset. For example, he mentioned mobile gaming, where the brunt of the work is in the assets (art, audio).
For a demo or something special enough, it wouldn't hurt him at all to invest 10-50k in assets but everything else would be down right crazy.
I don't think it would make sense at all to hope for a second minecraft or whatever and risk a million bucks for it.