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.
Moltara Run:
Use your mouse and keyboard to guide Roxton through the volcano's searing hot passageways. Click on your left mouse button to make Roxton rise, and release it to make him descend.
Pressing the V key on your keyboard will make Roxton speed through the tunnels and past obstacles, while hitting the C key will put on the brakes and slow Roxton down.
Keep an eye out for bonus gems you can grab, and dodge the bombs, flying rocks, and other obstacles that stand in Roxton's way.