Follow your heart.

If there are other active runners interested in the game I suppose you could pitch the idea to appoint one of them as the new mod.

In any case, even if the game were to be left without a mod and a new runner wanted to add a run, they could always ask to be appointed as a mod here.

@MarioAtWork Woah, woah, woah. Flash games can still be played on a .swf runner. If you don't like moderating the game it's your choice but from the way you've explained it, it seems like you've put your heart into this game so I say stay as a mod as it's still possible to play the game. I'd say @Daravae put it in a beautiful way. Follow your heart.