On this site - Frog Finder is a great game - but even in my opinion, Frog Legs is missing something - it ends up being a very long drawn out game.

Over on YourTurnMyTurn.com & Jijbent.nl - they now have a Minesweeper game based on the Frog Legs concept, with some changes:
(1) You don't see where your opponent guesses wrongly - so you can now guess without the fear of giving your opponent too much information.
(2) Spaces which give no new information is automatically shown - so there is no more just making "dummy" shots so you don't reveal anything new
(3) Slight scoring change - losing only 2 points for a guess - making it much better to try to guess.

YourTurnMyTurn.com = English language site
Jijbent.nl = Dutch language site
Brettspielnetz.de = German language site (game is not released there yet - might be with different rules)

Anyway, I suggest to go check it out - They don't have the number of games that this site does - but they are great sites with a nice selection of games

.... But they also have a GREAT Rummy based game - very fun also. I go by coan.net over there - feel free to invite me to either Rummy or Minesweeper game there.