There are plenty of free and open-source games out there, for various platforms. However, I notice no one ever asks about them.
For example, take AssaultCube. It's a semi-popular open-source game, however, there are no questions about it, or any similar open-source game (that I've heard of) anywhere to be found.
Are questions about games like these off-topic, or are there no questions simply because the game doesn't get enough attention?