Playing online, play at least one game of all four game types in the same session.
King Me! (10)
Get a king in Checkers.
Mancala Master (20)
Win a game of Mancala with 27 pieces or more.
Mancala Warrior (20)
Play online with a friend and win 2 Mancala games as white and 2 as black.
Overkill (20)
Win at Chess while taking every one of your opponent’s pieces except for the King.
Play 5 (5)
Play 5 online games.
Player of Games (5)
Play all four game types at least once.
Unlock extra game pieces
For every achievement you acquire, you unlock an extra set of game pieces to be used in Chess, Checkers, Reversi and Mancala. There are 12 extra sets in total.