|Release date||October 24th, 2002|
|Media license||LaTeX Project Public License|
|Hetris is a free game. This means that the source code is available to be studied, modified, and distributed. Most projects look for help with testing, documentation, graphics, etc., as well.|
Hetris: An exploration of literate programming in Haskell is a text mode implementation of Tetris in Haskell, created by Ian Lynagh to demonstrate pretty-printing of a literate Haskell program using Haskell2LaTeX. The document produced by running Haskell2LaTeX then LaTeX is a detailed explanation of the structure and internals of the program.