Time sure has flown. Some recent interest in my Super Mario Bros. clone,
“Super Tux,” has reminded me that it’s been about a year and a half since
I last worked on it. (Sorry!)
0.0.2 is available for testing. Not much has changed, but it’s still fun. 
http://www.newbreedsoftware.com/supertux/
Changelog is here:
ftp://ftp.sonic.net/pub/users/nbs/unix/x/supertux/CHANGES.txt
Enjoy!
-bill!