You goal is to drop into big flower pot several (5, 10, 15, 20, 25 or 30) times.
Staying on stone bricks you get flower pots. This is main item in this game. You can use it to build at big flower pot or to buy some stuff:
1) Punch bow has punch II enchantment; 2) Normal arrow destroys the pot it got at; 3) Big arrow destroys 3x3x3 pots with centre in one it got at; 4) Punch stick has knockback II enchantment; 5) Using gunpowder you can destory flower pots. (You can destroy flower pots just with hand.)