The goal is to shoot magnetically charged Particles into a Collector to win the level, guided by other objects such as magnetic poles, splitters, and even portals. There are 59 levels to complete; and even more with the game's built-in level editor.System RequirementsSupported OS: Microsoft Windows® 2000/XP/VistaProcessor:Pentium or Athlon, 1 GHz or higherMemory: 512MB (Vista 1GB)Graphics: DirectX® 9.0 compatible, PixelShader 2.0DirectX®: 9.0cHard Drive: 30MB