Just what is Sony up to these days? The Playstation 4 is still selling like hotcakes, and while lots of staff within their internal studios have been hit with redundancies, it seems like Sony might have a few new cards up their sleeves.

In a find via NeoGAF, we’ve learned that Sony has trademarked two very interesting names, Entwined and Kill Strain. You can find the trademark for Entwined here, and the trademark for Kill Strain here. Both of the marks were filed in the United States, and they were filed on April 14th and 15th, respectively.

Clearly, Sony has yet to confirm any games correlating to these titles, but we’ll keep you guys posted.