For the most part I upload unedited (or with minimal editing) footage of whatever games I'm currently playing. I don't add commentary to the videos (though I might start doing that in the future). If you're looking for a walkthrough/video guide of a particular game, I don't usually upload those types of videos but if one of my videos helped you get through a part of a game you were stuck on, that's cool. I play a lot of indie games that maybe don't get a lot of coverage, so I just figure if someone finds some little known game in the eShop or Steam or PlayStation Store, etc. and they're looking for videos on YouTube to learn more about the game, maybe I've uploaded a video about it already that just watching a few minutes of can help decide if it's something they'll enjoy or not.
I upload some non-video game stuff occasionally too, but expect 95% of my content to be video game related.