The game is not hard, it's impossible to play. Heathrow has 0 slots available, and it's like this since mid 1961 (one and a half years after start). Slots cost 300-400k right at the beginning, I basically spent all the starting money on two aircraft and 4 routes. Then, I had to wait entire weeks to open a new route. Now, I am stuck, I can't open or modify any route. Moreover, my demand is constantly going down, even if my company image is 90 and my aircraft fleet is getting newer and newer. I am using jets on some routes that were flown with piston aircraft, and now most of the time the aircraft is parked, because I can't change the routes or fill the gaps...it's so annoying, I don't know why I am still playing. Too many players, big mistake from the admin.