Go where your target audience is and talk to them. HN seems like a good place for programmers + gamers.

As a word of caution, doing "customer development" correctly can be quite tricky. People saying that would use your service if you ask them is not a good indicator of you solving a real pain point. You need to figure out the right question to ask. Google for "customer development" for good information on that topic.

Feel free to send me an email if you need feedback, I'm in your target audience.