Random characters seems a pretty accurate description.

Exactly what OS are you on?
The current versions are only available for linux64 builds. And you need to start it with the included bash (launch.sh). Hopefully other builds will be available in the near future, or you can download source from github and build your own. (note: If you do that you will still need art and data files from the download and for now local copies of Cal3d and Crystalspace).