Dubstep was emerging around that time, way before Skrillex and the particular style of it that he popularized. I think I hear the similarity you pointed out, though. It may be just a coincidence or a deeper common influence - for example the first song on that Bowie album sounds like drum n bass which was a likely influence on early dubstep.
Yes it is worth it. The return on gameplay hours for the cost of a game can be incredibly high.
I recommend you start by downloading Steam on a laptop or PC and browse some games, or try some demos. Some games require mouse and keyboard, while others are better with a controller - my preference is a regular Xbox controller, it’s plug and play.