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.
Korbats Lab:
Dr. Sloth is hoarding all the ingredients to make his evil Transmogrification Potions in a mysterious old laboratory that’s crawling with nasty Korbats and Spyders. Destroying all of Sloth’s potion ingredients is sure to ruin his dastardly plans, so your mission is to go in there and smash as many boxes as possible with your trusty bat! When the potion bottles drop, pick them up; you never know what might happen!
Use the arrow keys to move left and right, and press the space bar to release the ball! Now, get smashing!