If 4 friends are sharing a vintage arcade game and they have 26 hours of available time to play in a week, then each person's fair share of the playing time would be 6.5 hours per week.
To calculate this, we simply divide the total available time by the number of people sharing the game:
26 hours / 4 people = 6.5 hours per person
Therefore, each person should get to play the arcade game for 6.5 hours per week if they want to divide their time equally.