Andy at PC-Games-And-Reviews.com is running a contest to give away 5 free copies of Creeper World.
Check out his blog entry here:
http://blog.pc-games-and-reviews.com/2009/09/creeper-world-contest-win-free-copy.html (http://blog.pc-games-and-reviews.com/2009/09/creeper-world-contest-win-free-copy.html)
The actual contest page is here:
http://www.pc-games-and-reviews.com/creeper-world-contest.html (http://www.pc-games-and-reviews.com/creeper-world-contest.html)
Good luck!