There are mini games in My Talking Tom, such as whack-a-mole, which give you the chance to win coins, as well as satisfy Tom's entertainment needs and one where you need to guess what Tom is wearing, which is quite fun, especially for younger players.
Another interesting feature is the ability to visit other players' houses and check out how they've decorated theirs. You can also look for treasure chests, where you could turn up more coins.