The green garden Zombies are loose in the castle and are creating a mess with their muddy feet.
They are very timid though so give them a poke and they will go away, before they wreck the place.
Also don't disturb the red castle Zombies because they are very helpful and might leave a gift, if you need it, after you have let them pass.
Get a Highscore to brag with on the Leaderboards and unlock all the achievements.
If you find bugs, or have any awesome improvements or features to suggest, then don't hesitate to report it at the Support site and I will have a look at it.
I hope to add new features to this game based on your feedback, so don't be shy.