Bundle stars is giving away Pid- Only catch is you have to like them on facebook. Not a bad trade off I guess- at least they aren't asking to spam your contacts.
I read an article a while back about Pid. The developer put in a lot of work on the game and when he released it it got bad reviews because the reviewers found the game too difficult. The developer then changed it so that it's wasn't that difficult anymore and people really enjoyed it, however the reviews were out and it had a poor metacritic score so the game wasn't selling.
I think at this stage the developer just wants people to enjoy his work. I still have to play the game but the article really made me respect the developer.