to solve 21 you need to free the yellow ball and when its almost under the brown one, release it, making the brown push the yellow to the left and infecting the others
I'm not sure if you read this, but I suggest you do. I like your game a lot, infact, I think you should make a map editor, which we can build a custom map with custom starting units and buildings. When you are finished, you would save it, and get the code of your level. You can share that with your friends, and it could be very fun. Another option could be multiplayer, where we could wait in a lobby, and join games which we want to play. There would be a more-info button too, to show you the map and layout of units. Anyway, I hope you read this. (Copy and paste if u agree) And one more suggestion from me: Something like a random-map generator, to play every match on a new map!
Alive Monsters
Dude! You just completed the Alive Monsters achievement in Sonny and won the Alive Monsters badge and 30 points!
Illuminator
Dude! You just completed the Illuminator achievement in Sonny and won the Illuminator badge and 30 points!
dude I love this game! 5/5