Statetris is an online game that mixes aspects of the popular game Tetris with local U.S. geography. Instead of positioning the typical Tetris blocks, you position states/countries at their proper location. Statetris is a pretty tough game (at least on the hard level) even if you know all your states -- the state blocks are tough to lineup correctly. This could be a good teaching tool for a young student trying to learn his or her 50 states. It is also a worthy time waster for everyone else. Statetris games for other contintents and countries are also available. You really need to know your African geography to succeed at this version of Statetris.
