Drop - Anniversary Edition - PC Strategically position different colored drops to eliminate the same color groupings and clear the board! 7 challenging game modes! Play as long as you can in Infinite Mode, solve 125 puzzling levels in Challenge Mode, tackle tricky Vertical Mode, and more! Exercise your brain with word puzzler Challenge Letters and arcade brainteaser Penguin Puzzle Instantly addictive game play  easy to learn, hard to master!