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.
Volcano Run II:
That inquisitive Tyrannian Scorchio Glubgar is at it again! He’s flown too far into the depths of a seething Tyrannian volcano, and more than just his wings will end up singed if you don’t help him steer through the scorching hot rocks and boiling lava. See how far through the volcano’s tunnels you can guide Glubgar, but be sure to watch out for flying fiery bombs and a host of other burning obstacles. Also, see if you can help Glubgar snatch up some precious gems along the way!