Games to Exercise Your Brain

Check out these online games for exercising your brain:

In Assembler you have to move objects around to solve the puzzle.  There are boxes, boards and barrels and they all obey the laws of physics.  Each level is a little harder than the last.

FreeRice quizes you on vocabulary, adjusting to your skill level.  Might be good practice for preparing for the GRE.  There are other quizes too: Math, Foreign languages, Atomic Symbols, Geography and even paintings.

GeoSense tests your knowledge of geography.  You have to click on the location of a city within 10 seconds.  Your score depends on both speed and accuracy.  You can choose US cities, European cities or World cities.