At my shower, we had a dress me type baby doll and had a contest for how fast people could dress the baby. The clothes include underwear/diaper and a bib and hat as well. It was funny to watch, especially when people started turning the baby upside in a way that you would never do in real life.
Another game was related to matching candy bar names with pregnancy or baby terms. Kind of like this:
http://lilluna.com/candy-bar-shower-game-printable-tutori...
except we did it like concentration. So there were cards for the candy bars and cards for the matching terms. Then they were mixed up and put face down on a table and you tried to find matches. If you found a match, you "won" that candy bar. And then the one with the most matches won a prize. I don't recall what we did if there was a tie at the end.
Then there is that safety pin game where everyone starts with one pin and the goal is to catch someone saying baby during the shower and take all their pins. In this case, you could expand it to not being able to say baby or twins. I don't particularly care for that game, but other people like it.