At software-center.ubuntu.com it says
Thank you for downloading your Humble Bundle games from the Ubuntu Software Center
Notes: As these games have been recently added to Ubuntu Software Center it might take a minute for them to appear. If you see a "Not found" message, Ubuntu Software Center is working in the background to update the list of available apps.
When I click on a link, the software centre opens and it says There isn’t a software package called “swordandsworcery” in your current software sources. I have waited for about 30 minutes now. I have also executed sudo apt-get update & restarted software centre to no avail.
Do I keep waiting?
Best Answer
You can speed up the process by running
It runs manually what the Software Center does at regular intervals.
Then start the Software Center, the games should be there.