You can get unlimited lives by resetting the time on your phone back a couple of months, so when you spend your five lives, you can forward the time 2,5 hours ahead and get five new lives.

When you have a single bomb it will explode in the direction it's pointing, when you have two bombs, either side-by-side or one on top of another, the bomb you press will be the one that will explode horizontal, regardless of the way it's pointed.

If you're playing on your phone or tablet connecting the game to Facebook will grant you 25 free coins. You can also ask your friends for extra lives if you don't want to change your time.