Attack on Titan came out on December 5 along with a downloadable story episode featuring Levi. The Levi DLC chapter is free for a limited time and Spike Chunsoft is extending free distribution until February 28. The Sasha DLC chapter, which came out on December 20, will also be free until February 28.
Spike Chunsoft probably did this because Attack on Titan continues to be a strong seller. Japanese gamers continue to pick up Attack on Titan week after week. It’s up to 202,029 copies now, which is no small feat for Spike Chunsoft.