Simplify the following text for a Grade 9 native English-speaking person.
Original: A Power Set was also available , which included the Action Set , the Power Pad and a 3-in-1 cartridge that included Duck Hunt , World Class Track Meet and Super Mario Bros.
Simplified: If a player bought the NES system with the Power Pad , then Duck Hunt came on a 3-in-1 cartridge that also had World Class Track Meet and Super Mario Bros.