Callisto-Tech

Crosswords are both educational and fun and this is a great way to develop vocabulary, spelling, rea

Untangle/Planarity is challenging brain teaser game where you simply have to free up (untangle) a we

Challenge yourself with more than 250 professional US style crosswords. It is easy to use and fun to

This is simple picture crossword puzzles for young kids. These fun & simple crossword puzzles will h

Challenge yourself with more than 300 professional UK style crossword puzzles. It is easy to use and

Collection of three single-player open-source logic puzzle games, free. "Light Up", "Lights Out" and