Usually, Pacman will run from the ghosts in their colors. Then, for 300 good reports, you'll get Pacman with one ghost ... for 5000 good reports Pacman with all four ghosts. And you'll have to have Pacman on the right side of the ghosts (he's running from them, right?)
And when you've reported anytime within the last 24 hours, your ghosts will turn blue, and Pacman will appear on the left side, chasing them Good luck implementing that, theymos