Fencer: What makes you think "Frog Legs" can't be played OTB? You'd just do what they did when they played "Kriegspiel" long before computers where common place.

In the case of Frog Legs, all you need is three people and some scraps of paper. One referee that will assign the frogs and call out the hits/number of adjacent frogs, and two players.

But since this is a feature board, here's my frog legs/finder feature request: can squares that have been "guessed" (but don't contain a frog) marked in some way? With players that do one shot/week consistently (hi coan!) games take several months to finish, and it's impossible to remember which squares have been guessed before, and rather awkward to scan to move list.