I seem to recall seeing a number of examples on filfre.net, and other games like _Prince of Persia_ were largely one-man jobs (he got some help with animation and whatnot, but it was essentially a one-man thing, judging from the famous developer diary). One problem is that people don't always cite exact dollar amounts, and when they do, they don't inflation-adjust - if you made 'only' $300k off a computer game in 1980, well, that's a million dollars now right there.