Rnd is short for
rocks 'n' diamonds which is not as fun as block land mostly because it is 2D but it's free. You can make graphics and levels in it, its open source and it doesn't demand much to run. Those are the only good parts about it. If you are interested, learn more here:
http://www.artsoft.org/rocksndiamonds/news.htmlnote: It is easier to make graphics, sounds, etc. if you know how to use a tool called
conf edit(only runs on windows)
