The happy friends played games together.

Meaning: This means that a specific group of friends who were happy and full of joy were taking part in a game or activity together in the same place at the same time. It's like saying, The group of friends were having a good time playing a game together.

Choice of Words: The is used to refer to a specific group of people or things. Happy means full of joy and pleasure. Friends are people you like and care about. Played means to take part in a game or activity. Games are activities that are usually done for fun. Together means in the same place at the same time.