I see On Steam we offer three packages:
• The base aerofly RC 8 contains 64 models and 15 sceneries
• Expansion Pack 1 as DLC (downloadable content) with 90 more aircraft and 20 new sceneries
• Expansion Pack 2 as DLC with 90 aircraft and 20 sceneries as well.
But I found reviews that the RC8 sound does not sound very good. If everyone fixes it for a better experience, please let me know