Thanks to Qi, DURF is now available in Chinese! You can find it here :)

Other languages available besides English and Chinese:

• Italian by Francesco Catenacci (can be downloaded on the main page) 
• French by Louis-Philippe Breton (can also be downloaded on the main page) 
• Spanish by Arturo Purroy
• German by Birger Lambrecht
• Portuguese (Brazilian) by Mikaela Morais Dias
• Japanese by nonntann
• Russian by Dmitry Pavlov
• Polish by Bernard Abramowicz
• Finnish by Kari Silvennoinen

Cheers!

Emiel