Complex sentence: The player starts the game with the F/A- 18 Hornet, additional planes are unlocked mid-level by flying through an icon representing them-these planes are then available to fly the next time the player starts a level.
Split into simpler sentences: The player starts the game with the F/A- 18 Hornet, and additional planes are unlocked mid-level by flying through an icon representing them. These planes are then available to fly the next time the player starts a level.