Geometry Games
Shapes:
http://www.sheppardsoftware.com/mathgames/earlymath/shapes_shoot.swf
http://www.sheppardsoftware.com/mathgames/geometry/shapeshoot/QuadShapesShoot.swf
Angles:
http://www.echalk.co.uk/Maths/Angles/angles.swf
http://www.ignitelearning.com/media/266_t07m02_IN09.swf
Area and Perimeter:
http://www.sheppardsoftware.com/mathgames/geometry/shapeshoot/PerimeterShapesShoot.swf
http://www.sheppardsoftware.com/mathgames/geometry/shapeshoot/AreaShapesShoot.swf
http://www.mathplayground.com/manipulatives/AreaandPerimeter_secure.swf
Graphing:
http://www.bbc.co.uk/schools/teachers/ks2_activities/maths/activities/interpretingdata.swf
http://media.abcya.com/games/fuzz_bugs_graphing/flash/fuzz_bugs_graphing.swf