A year ago I downloaded tons of steam games to my computer and played a lot. Recently I've been pretty busy and I decided to minimize my gaming by deleting most of them and only leaving a few. I also have a lot of important files which can go up-to 100GB of important files. My question is if I should transfer my important files then format my laptop, or just delete the games one by one. I'm quite a lazy guy so I'm not sure if I sure just format so freely. The total of my games is about 100 of them so uninstalling one by one is a very long task.