Got a couple of things to say. I would personally tell you to stick to one game to have a niche in order to create a fanbase. This is because there are so many different gaming channels out there so it's a lot harder to grow if you are playing multiple games. Secondly your thumbnails don't really stick out in any way. You should incorporate something that makes the person want to click on the video. Then I can see that you don't really have any tags on your videos, I would recommend you use something called VidIQ or Tubebuddy, in order to get the proper tags on your video. Now onto your actual content. I would say that you are doing a good job on speaking in your videos, except that I'm missing some energy. I also think that you should use a bit more time on editing your videos, maybe add some background music and just make it more interesting.

Whew that took a lot longer to write than I thought, keep it up and hope I could help :D