gbrainy is a brain teaser game and trainer to have fun and to keep
your brain trained.

It provides the following types of games:

    * Logic puzzles. Games designed to challenge your reasoning
      and thinking skills.
    * Mental calculation. Games based on arithmetical operations
      designed to prove your mental calculation skills.
    * Memory trainers. Games designed to challenge your short term
      memory.

It is designed for GNOME and runs on top of Linux and different
Unix flavours.