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.
Grand Theft Ummagine:
In this game you play Stan the Kyrii, a wily thief sneaking his way around the city of Sakhmet trying
to steal some food to eat. Unfortunately, life is not that simple - there are scary Elephante guards who
will do their best to catch you and throw you in the castle dungeons!
Use the arrow keys to move Stan around Sakhmet. Pick up the fruit, and get out of each level
as fast as possible. If you find any magic items on your travels, you
can activate them by clicking on their icons!