Head over to https://www.indiegala.com/store#giveaway and grab a copy of Pixel Puzzles: UndeadZ for free! All you have to do is log in, link your steam account and join their steam group. "Pixel Puzzles: UndeadZ is a traditional style jigsaw puzzle game with top down shooter gameplay throw in to ruin your day and peaceful puzzling experience." Original Steam price: 6,99€