You typically only win the lottery once as well... It's 1 mil at the release date of the game and the following maybe 3-6 months. Game sales usually happen at the release date and then there's a pretty much insignificant "long tail" of sales.

Anyway, while 1 million isn't really enough to retire instantly, for sure it lets you retire 10-20 years earlier if you're just a little bit smart with money.