Control Tower (Upgradable)

Control Tower

Level 1 - 400 coins (3 Hangers Max), 3 Electricity, 30mins build time, 100 Coins Speedup

Level 2 - 2,800 coins (4 Hangers Max), 1hr build time, 220 speedup
1 Copy machine
1 Projector
1 Dispatcher Console
1 Radar

Level 3 - 8200 coins (5 Hangers Max) , 4hr build time, 650 speedup
2 Textbook
2 Whiteboard
2 Wide-angle Binoculars
2 Weather Display
(items from Rome)

Level 4 - 20,000 coins (6 Hangers Max) , 24hr build time, 1 cash speedup
2 Amperemeter
2 Shredder
2 Ergonomic Chair
2 Smoke Detector
(items from Singapore)

Level 5 - 200,000 coins (7 Hangers Max) , 48hr build time, 2 cash speedup
3 Insulation
3 Projector
3 Transmitter
3 Server Rack

Level 6 - 250,000 coins (8 Hangers Max) , 48hr build time, 2 cash speedup
4 Flight Helmet
4 Flight Goggles
4 Dispatcher Console
4 Radar
(items from Berlin)

Level 7 - 500,000 coins (9 Hangers Max) , 96hr build time, 4 cash speedup
4 Airline Route Map
4 Headset
4 Walkie-talkie
4 Monitor
(items from Tokyo)

Level 8 - 1,000,000 coins (10 Hangers Max) , 6days build time, 6 cash speedup
4 Laser Rangefinder
4 Demodulator
4 Fingerprint Reader
4 Stablized Binoculars
(items from neighbours)