Nearly 1000 freeware board games (with appr. 5000 variants total) have been written in the Zillions language. This includes classic, popular games as well as many newly-invented games. Although the vast majority of the entries, to date, are two-dimensional, the program also supports three-dimensional games competitively. [It currently lacks three-dimensional graphics support, however.] The authors all work for free and anybody can contribute games. On the Zillions download page, games are grouped into four categories- 'Chess Variants', 'Puzzles', 'Educational Games', 'Other Games' (a miscallaneous category).
Some of these games are educational and can be used in school classes to teach mathematics (esp. geometry) and other subjects. Zillions Development claims that the power of playful learning is underestimated by some educators.