RapidMiner (formerly YALE) is a flexible Java environment for knowledge discovery in databases, machine learning, and data mining. Many nestable learning and preprocessing operators (including Weka) are provided. It features an XML-based graphical user interface, a plugin mechanism, and high-dimensional plotting, and provides an easy-to-use extension mechanism that makes it possible to integrate new operators and adapt the system to your personal requirements. A command line version is also included.
Tanky is a tank shooting game with old-school graphics (lines and flying pixels in 16 colors). It can be played by 2-3 players on one keyboard. The main goal is to shoot your opponents down. You have one tank, five shots, and a shield which can take five points of damage. Every time, there are different bonuses flashing around. Collect them and gain faster weapons, more shots, recharge your shield, etc. The best-scored player wins.