1)   Ultimate Maths Invaders for OS 9 1.0 The new, fun space attack math's game that drills number facts and tables. Features Cool, exciting 3D-style graphics and wide ranging content for ages 5-14+. 10 challenge levels allow pupils to test themselves using preset content combinations. 2)   Ultimate Maths Invaders for Mac OS X 1.0 The new, fun space attack math's game that drills number facts and tables. Features Cool, exciting 3D-style graphics and wide ranging content for ages 5-14+. 10 challenge levels allow pupils to test themselves using preset content combinations.