A few years ago, I wanted to have a tool to enable the play of hidden information games (Rock-Paper-Scissors, Odds/Evens, etc), but there didn't seem to be one. Now there is, the Synchronous Messages (SM) system.

Longtime associates will recognize that this is not the first such thing I've created. I developed the similar Simultaneous Revealed Orders system a while back. It was discontinued, but this should do the same thing better.

For a practical demonstration of how the SM system works, view the new Tutorial.

I hope, Lord willing, that this can be a useful public service going forward.