The acceptable minimum is 90%, but to score three stars requires a perfectly neat cleanup of every sliver of ice. FEATURES: + Full high resolution graphics + Addictive “Aim and Shoot” Gameplay + Game Center & Achievements & OpenFeint + 120 Awesome Levels + Easy to learn but hard to master + Explosive Excitement - create cascades of exploding crystals EARN MORE STARS: 1 STAR = 90% of level cleared 2 STARS = 95% of level cleared 3 STARS = 100% of level cleared BUILD YOUR WINNING STRATEGY: + Spike Bomb – simply aim and shoot + Ghost Bomb – goes through ice, rub the screen to control it + Helicopter Bomb – tap to deploy violet crystals + Split Bomb – tap to split into 3 green explosive crystals