They allow you to raise your five character attributes:
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You can also use the experience points to increase health and mood, but as those can be increased by other means, avoid wasting experience points on them!
Same goes for the options to increase your skill level and current song, use updates on those.
If you have any of skills connected to recipes, you can spend experience points on discovering a new one. However, if you have only a few of them, you should rather find a master and learn a recipe from him. This is only VIP.
Read more at popomundo.com
If you are lazy all week, you get 1 XP. Depending on how many different things do under the week, you can get up to 3.
Things known to contribute to XP gain:
Jam sessions
Playing shows (especially doing a stage event, which you haven't mastered completely yet)
Finishing a song that turned out well
Taking pictures of people on the Paparazzi List (not other people)
Healing people succesfully
Putting out a fire
As a Police Liutenant or SWAT officer: Arrest people
If you are a Mayor: Holding a speech on TV
If you are a Judge: Judging
Criminal activities (e.g. Spraying graffiti or Stealing)
Using Book of Back Stage Experiences
Some exceptions:
New Popomundo characters get 2 XP points on every update for the first 22 days of their lifes in Popomundo. These are called Newbie Experience points. Newbies can also earn the normal XP points. As others, they can earn up to 3 XP points per week this way.
Children get XP randomly throughout their first 16 years. Total number of their experience is 137.
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