We've prepared the seasonal editions of Chicken Invaders 4 (Christmas, Easter, Thanksgiving) as DLC. Similarly to the base game, they have all been remastered with double-resolution HD graphics and enhanced with Steam-exclusive features (multiplayer, stats, achievements, trading cards, etc). We're starting off with a soft launch of the Easter Edition, which is available now on Steam. In a few days we're following this up with the Christmas and Thanksgiving editions. Enjoy!