Gbrainy

gbrainy is a brain teaser game for GNOME designed for use in education. It is licensed under the GNU GPL. The game was written in C# and has since been ported to the Sugar graphical environment, as well as Microsoft Windows.

Specifically, it contains the following:
 * Logic puzzles - games designed to challenge reasoning and thinking skills
 * Mental calculation - games based on arithmetical operations designed to improve mental calculation skills
 * Memory trainers - games designed to challenge short term memory