After a long day of carjacking and Nazi shooting, it's nice to finally be able to do something relaxing with your gaming system. Electroplankton, a quirky game only Nintendo would make, is a trippy musical and graphical experiment that's like being the lead guitarist and the lighting guy for Pink Floyd at the same time. Using the touch screen and microphone, you manipulate microscopic organisms that, like your sister, twitch and make loud noises when you touch them. And while it's more of a tech demo than a test of reflexes, after a long day of crime and combat, it's just what your overworked thumbs need.