Snail mail baby shower?

Hi! So I was looking to get opinions on throwing a snail mail baby shower. No one has offered to throw me a shower, and I know that if I don't throw one myself, it isn't happening. This is our first baby. I was thinking of sending people invitations saying that we are having a snail mail party because we have friends and family all over the world (we live thousands of miles from the nearest friend or relative) but would still like to celebrate. I was planning on mailing those who RSVP a small package of mail-friendly baby shower games, and then they mail it back to me and I'll mail a small prize to the winner of each game. We would be including registry information as well, because we could really use the help. What do you think of this idea?