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.
Pterattack:
Fly through the canyons of Tyrannia, taking out the evil Pterodactyls and stopping the Grarrls before they
can destroy the homes of innocent Tyrannians! Collect all four weapons along the way; each weapon can be
upgraded multiple times for better shooting capabilities.
Use the arrow keys to dodge and dive around your enemies, and the space bar to fire your weapon. Good luck!