Not real sure. My daughter just had her friends over. They ate, played football, and just hung out. That's really all she wanted to do at that age. Her 16th birthday party is this Saturday and is going to be pretty much the same. Ask her what she wants to do for her party.
At 14 my kids didn't have parties with 'games' anymore. They had friends over and grilled burgers, set up a stereo on the back patio or in the family room and listened to music, danced etc. You DEF. need to consult with your daughter on this.
prob no games, she is really to old for that. Just get a LOT of food maybe rent some movies and and have video games handy. Rock band, karaoke ect are great that they can all play together. If you don't have the system or the game both can be rented at blockbuster. Will there be boys, don't hover but know what is going on. Oh and buy some drinks for yourself, you will need them