Here's a list of all the statues and what you need to do to unlock them. You'll notice a gold statue outside the game when you unlock it
“Mouse Trap” Statue - Play 5 games
"Twister Statue" - Play 5 games
“Yahtzee Hands Down” Statue - Play 5 games
“Clue” Statue - Play 5 games
“The Game of Life” Statue - Play 5 games