Risk and Strategy have no "surrender" option, so managing expected value is difficult. There is still only "win" or "lose", and there's no point in giving up, except to save yourself some time, or to have more fun by starting over with a clean slate.

There is a popular game with an expected value option, which makes it more interesting. Ironically, for the very reason I like it, most of the people I play with don't. The game is Backgammon, and the EV feature is the doubling cube. When you think you're doing well and highly likely to win, and/or you know your opponent is risk averse, you double the value of the game. The other person has to choose to keep playing at the doubled value, or they have to surrender the current value without any more play. I love that.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)