Zombotron 2019 is a completely different game so to add it to the site do a run and go to https://www.speedrun.com/games and click "Request game" (should be somewhere in the top right).
Sure, there's also GOG version. As I'm aware, usually people moderating single games get handle of whole series next, even they're of completely different genres. Here, the game mechanics are quite same. Adding the game as the first run has been done is one way. But I know example, when the runs came after the games appeared on SRC. That is the latest games of Alien Breed series, which were released a while ago. So it might be good to stimulate people to do runs by adding game first, teasing to take first place in empty leaderboard. Same probably would be applicable for other flash games of series. Also, there's always room for Individual Level runs.
