Those replays are really cool. I wonder if there's any way to get your stuff onto hackaday or the RasPi blog?
Yeah, PR isn't exactly my forte. And BerryBots isn't the only programming game out there lacking players, so it's kinda tough not to come off as desperate. I'm a little more comfortable with it now that BerryBots is more polished with some neato features that I'm really proud of... But still, I'm more inclined to just focus on making it good and make a small PR push every once in a while.
I also try to keep in mind that I didn't even get into Robocode until 4-5 years after it came out, and that was years after the original author had stopped working on it. Programming games can have a pretty long and slow life cycle. Even here at the RoboWiki, we have some pretty long periods of low activity. And it even seems like Robocode is still growing in popularity! Which is kinda crazy.