You're not going to find much that can run on DirectX 10 after 2014 outside of low budget indie games. Once the PS4 and Xbox One hit, big budget releases went DirectX 11 only for the most part. The newest games you're likely going to be able to play are going to be late 2013 titles for the most part eg. Battlefield 4 or Assassin's Creed IV Black Flag. You might be able to get Wolfenstein The New Order to run, as it apparently only uses OpenGL feature level 3.2 which I believe your card supports. However, the 4870 does fall below minimum requirements and may not run the game without problems due to AMD's notoriously bad OpenGL driver support, especially on their legacy cards.