• colors of destination airports and plane infoboxes changed
  
• revision of the level overview screen
  
• dropped the game outro screen, game immediately exits now
  
• "next level" button removed after the last level
  
• added a congratulation text when all levels have been completed
  

• hover effects on buttons
  
• several sound effects
  
• new 'option' screen (resolution, window mode, music/sound-volumes)
  
• a new cheat: type '0361' on the menu screen to unlock all levels
  
• planes now turn faster to their target course
  
• some ui improvements
  
• some bugfixes
  

Music can change the world ...

• completing levels without losing a plane
  
• directing planes to their destinations
  
• playing this game incredibly long
  

• level maps got colorized
  
• time factor can be in-/decreased with +/- keys on numpad
  
• a new counter on the top now shows the number of planes ever landed
  
• a plane landed on its target airport now shows the CO2 equivalent per person emitted for this flight
  
• a new counter on the top now shows the total amount of CO2 equivalent per person emitted for all planes ever landed
  
• a new info text explains why a level was lost (co2 emissions vs. plane crashes/loses)
  
• minor change: a plane is marked landed when the center of the plane is inside the outer circle of the destination airport
  

• 7 new levels, now 20 levels in total
  
• optimized level parameters
  
• wind system implemented
  
• waves of more traffic in several levels
  
• after level time is over, all remaining planes must be directed to their destinations
  
• several bug fixes
  
• internal refactoring
  

• various screens redesigned (including new backgrounds)
  
• added scene transitions (fade in / fade out)
  
• new texts about climate impacts of aviation on level intro scenes
  
• increased the randomness of the planes origin airport
  
• resized planes and their infoboxes
  
• resized target airport texts/points
  
• distinguish wide-body and narrow-body planes
  
• redesign top- and bottom-panel in level view
  
• levels now sorted by number of target airports
  
• number of planes dependent on level
  
• individual level durations
  
• default plane speed dependent on level
  
• maximum carbon footprint dependent on level
  
• co2 penalty added when a plane is off course to target airport
  
• co2 penalty dependent on level