Clear pieces off the board by making sets of 3. Sound easy? Hang on. Let's talk about what makes a set.
All pieces have 3 characteristics: colour, shape, and value. To make a set, all 3 pieces in the set must have each characteristic be all the same or all different. How about some show and tell?
These are sets:
These are not sets:
Still with me? Then give it a shot. "Freeplay" mode will let you put pieces on the board at your own pace but "Timed" mode only gives you a limited time to make your move. If the timer runs out, the piece gets placed randomly. You know, just in case the game isn't hard enough already.
If you're ready, just choose a mode to start the game: