i like the penny game, i'll have to remember it. i've played a similar drinking game
i just went to one a couple weeks ago, we only played 2 games. one was sorta lame but it was funny. each person had to take turns putting on a blind fold, then putting on a pair of oven mitts. they then had to pick up a nylon (pantyhose works best but we only had the knee-high type) and try to put it on their foot. it's hard because you can't feel through the oven mitts so you don't know if you're holding it or if you've got the right end, and you don't have the dexterity to open it and get your foot in. we timed everyone and the fasted person to get it on their foot one a prize.
the other game was the typical old memory game. a tray was passed around full of various items, and then covered, we had to write down the items we remember and whoever had the most right won.
i've done that at baby showers also where the tray had baby-related items (including a condom and a pack of birth control pills lol). so i'm sure you could figure out marriage related items.
another game i've played at baby showers that you could do at a bridal shower... at the beginning everyone gets a token of some kind, at baby showers we used little paper cutouts shaped like diapers pinned to our shirts. you could do other shapes, wedding bells or something. now the trick is you're not allowed to cross anything. arms, legs, ankles.. if someone sees you cross something they can go over and take your pin/token. whoever has the most at the end wins. i've heard of this done another way too, that instead of crossing you can't say the word "baby" (imagine not saying baby at a baby shower lol) so you could it that way with the word wedding