This is a great game, very addicting - though not true to the expectations or ability of the player. On novice and others, everything is great until the snow. After the plows, planes land faster than others can take off, making it impossible to keep up with the game play. Planes wait until others are completely parked before moving off the runway allowing landing planes to hit; it further makes no sense. Also, watching the track of the carts supplying the planes once parked is skewed, which also makes no sense, delaying time in which planes are serviced. Ranking it a 3 because the concept is great and it's free, though it needs major improvements to the above mentioned. Easily a paid game if corrected. I keep playing to see if I land the planes differently by size, order of terminal availability creates a change. Hit 35 planes taking off and a second snow fall, but can't keep up after that.