I like Camelot. Although you have to be alert, for else a foul move often counts as 7 captured pieces. I think this hyper Camelot version should be added too ;)
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)