About a year ago I wrote a choose-your-own topic prayer in Twine. I think I entered it into a writing competition, so I didn't want to share it at the time, but the competition is long over and I'm happy to share it now. It's a Christian prayer, and maybe its contents reveal more about me than they will about how to talk to God, but I found it an interesting exercise.
Your own kind of prayer. Kind of. (A Twine game)
Much thanks to Dan Cox's tutorial for hosting a Twine game on philome.la.
ETA: Google drive can't host Twine games anymore, so I changed the links to reflect that.