You can nab yourself a free copy of Two Worlds just by signing up to DLH.net. Here's the blurb from the site itself:
All registered DLH.Net users can login to their DLH.Net profile and unlock the key by simply clicking one button, that's all!
Not registered yet? Just click on the link "New User / Newsletter" or go to http://www.dlh.net/en/register. Fill in the small form, reply to the confirmation email and ge the keys! If you also subscribe to the newsletter, you always will be informed about our Steam Key giveaways, because this will certainly not be our last games to spread!
Once logged in, click 'profile/keys' at the top of the page, then scroll to the bottom. Big props to BuzzDuraband for the spot on this one!