Xbox Live "Games with Gold" monthly game downloads (Xbox 360): This one isn't free it requires an annual Xbox Live Gold subscription ($60 per year). However, twice a month you get to download free games from the online service (new games appear on the first and 15th of each month). These are usually older games, but still very playable and quite enjoyable. The game from earlier this month, Civilization Revolution, ate up half my weekend while I sat there trying to conquer the world. If your Xbox 360 has the hard drive space to hold these gigabyte-heavy games, it's well worth it to get some free content for your paid subscription.
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