I don't like them either but probably 2 would be good. Also, the gift bingo game would be good because I was at a shower a couple of weeks ago and it got kind of boring watching the mom and dad open gifts for 2 hours.
I think it really depends on the flow of things. We played 2 at my shower. By the time everyone arrived and had a chance to mingle, we played 2 quick games while everyone ate lunch and then it was time to open presents. I know my mom had bought a few more, but it would have been overkill.
I think it's best to play it by ear. It's ok to have 2-4 planned and then once you get a feel for the crowd, you can decide which ones they might like best. In general, 2-3 should be more than enough. Now if people know you have good prizes, they might be more likely to participate too!
Re: Speaking of shower games...
~Benjamin Franklin
DS dx with celiac disease 5/28/10