I have DayZ (arma 2, OA ect) also got skyrim, red orchestra 2, war thunder, bloody trapland, APB: reloaded and minecraft. (Plus add any free game)
What do people want to watch on youtube? Which games do people watch the most and are the most interested in?
League of legends. It's extremely popular.
Warrock my friend
Now you have Dayz, it's a good game to try recording for the first time on YouTube, cause many people are playing it and the videos of this game may get much attention from the people who played it. So what do people expect to see in the video? The new stuff or a new gameplay you found or invented in the games, and how you play the game in a totally different way, something like these are the parts that most people want to watch, cdkeyvast.com
A lot of people got famous on YouTube for recording games like Minecraft, Gerry's Mod, League of Legends, Dota, and one my friend likes to play a lot is Chivalry.