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Posted By: Paul BCuriously BW uses optional rules in both directions. As you correctly point out, all the "rim" rules are by definition optional, and you can run a fully functional BW game using nothing but Versus tests. On the other side are little plug-ins like the "Oh Shit!" rule, which is included as a Fight! option for scripting noobs and is intended to be discarded with more experience.Like Paul, I can't think of any other games that do this.
I can't think of any other games that do that -- offer up-front options that are meant to be removed with more experience -- but I'm sure I'd come up with some with a little thought. Sure seems like a good idea, truth be told, when the core game is especially tricky and players have a hard time making informed play decisions.