If you are aiming for a game that people play for more than 1000 hours, sure. Commercially, this would be a terrible segment of the market to aim for. The peopl

If you are aiming for a game that people play for more than 1000 hours, sure. Commercially, this would be a terrible segment of the market to aim for. The people who play the same title for that long are unlikely to buy your game, because they don't have time to play it. Unless you happen to find a niche first, you will end up with a few players, but supporting them for a long, long time. Shorter games are fine, and sell to people who want novelty over repetition. Don't make the game longer than its content, and price accordingly.