Roof System Challenge is a a fun game for everyone to play for free. This game puts you up on the roof, where the player needs to nail down the streaming colored balls before they run down the exit hole.
Also, in between levels player can play the trivia sequence to earn bonus points with a chance to learn about Roofing.
Features:
1. Play 20 different levels in classic mode
2. Play the Survival mode, and try surviving as long as possible by not letting the ball enter the exit hole