Hi,
There is this game I played at my brothers wedding. Basically, you have to ask the bride and groom questions on how well they know eachother.
You ask the groom about 10 questions (amount of questions depends on how long you want the game to last) and ask the bride 10 questions as well. You don't disclose the answers to neither the groom or the bride. Only the person asking the question should know the answers.
After that, get 8 of those white mini writing boards or paper with markers will suffice as well. (6 for playing members, 1 for bride, 1 for groom)
Find 3 people who know the groom very well, 3 people who know the bride very well. You sit the teams up in front of the bride and groom. You can have one or two people hosting this game. One team goes first and then the other.
Let's say grooms team goes first. Host will ask the question. The grooms side along with the bride AND groom have 10 seconds to answer the question by writing it down. Once the 10 seconds are over, each member will show their answer individually, then the bride will and then the groom. If the grooms team answers match the grooms, then the grooms side gets the point BUT if the bride answer matches, then the brides side gets the point. If BOTH answers match, then both teams are given a point. If no ones answers match, then no point.
** From the team members, at least 2 out of the 3 have to get the answer right to win, if 1 gets it right and others don't, the point will not count **
The game gets very competitive so if you decide to do this... Do mention its all for fun and games! lol. The audience will have a fun time watching and the people playing will also have a great time. At least, I hope so! =-)