The NP ratio tells you how many Neopoints you'll earn for every point you score while playing a game.
For example, if the NP ratio is 100 NP for every 150 game points scored, to earn the maximum 1,000 NP reward for playing, you'd have to score 1,500 points during the game.
On the other hand, if a game's NP ratio is 25 NP for every point scored, you'd only have to earn 40 points in the game to get the full 1,000 NP for playing.
Piper Panic:
Help the JubJub piper charm his Cobralls into clearing the carpet of baskets. Just make sure that the Cobralls don�t hit the carpet's edge, or else they'll wriggle into the desert sands and be lost forever! If a Cobrall performs well, the appreciative crowd will throw the JubJub and his trusty Petpet jewels and gold coins.