Clonk Trademark License 'Clonk' is a registered trademark of Matthes Bender. It may be used within software products which are using source code from the OpenClonk project with the following limitations: If the word 'Clonk' is used as the name of anything in your software product then you must include the following notice in a suitable place (e.g. credits screen): "Clonk" is a registered trademark of Matthes Bender. If the title of your software product contains the word 'Clonk' then you must prefix the word with an added name of your choosing, e.g. 'MyClonk' or 'PortableClonk' and you must subtitle your project with the term 'An OpenClonk project'.