Like Boss said, you have to (mainly) make them for your own enjoyment. Doing things you want and like to do. I've been uploading since 2009 on my channel, pretty much the same genre of video for the entire time. Back in 2009 I did it for the pure enjoyment of it. My vids were not very good, but I enjoyed editing them and making them. The views came in after a while and I just said "alright that's cool, I like feedback". The only reason I ever started making what I uploaded was to make those few people who strolled across my videos say "What the hell is?" and screw up the source video of what I was editing. In recent years, mid 2013 till now, I haven't been as interested in the genre I was creating. Even though I left my channel dry for nearly two years I wasn't going to force myself to make something when I knew my video would be ruined from my own boredom with the project. I did that once and I did not like how it turned out. So, if you're going into gaming videos, this offers more of an opportunity to keep things fresh as there a lot of games out there. Hopefully that will keep you less bored and the audience more entertained. This will also help if you upload videos regularly, Bi-weekly, Monthly or whatever. Custom thumbnails also capture the eye better than just an image from the video itself. It may not show sometimes, but I assure you it does. Also, be natural. Don't try to be fake about anything, and don't try to force the humor, like Boss said. I'm Trying to say "be yourself" in a less cheesy way. Also, don't have videos run for too long. Unless it's a special or something, it should only run about 10 minutes or less. Also Intros should only be about 5-10 seconds long if you even have one. Edit them well too. Gaming or not, videos need proper editing to make them look crisp so don't slack on that portion of making a video. But honestly, after all that, I think Youtube runs on a 60/40 ratio of Luck to Effort. The only reason I think my original "rrhuntington" channel has more than a decent share of subs is because of luck on a few videos that got uploaded in the right place at the right time with the right topic. But effort helped make those views into subs, so never doubt efforts doing in your videos.
My gaming channel with my friends has been up for a few months and it has 13 subs, which are mostly my friends and only like 4 people who subscribed because they weren't a part of the channel.
We put tons of effort and for now, we really do it to entertain ourselves and the few subs we have. We sometimes feel cheated but we keep on pushing through. Do not get discouraged by low numbers. You'll find yourself questioning "why not me?" a lot, but keep posting, once again as long as YOU are having fun with it.. Time and the # of videos you post in the long run are your allies, as it gives more of a chance for one of those videos to explode. The first few years or months or however long you plan to keep up with your Youtube channel will be slow as hell. I can promise you that. You just have to keep up with it if you're in for the long haul.