In my world, there is more than just one tool for any solution. I could work on any screw with just one screwdriver (maybe I need to add a metal saw to get a flat screw, but these are details).
If you want to TRY Elive. I recommend to try it. If you are familiar with the basics (setup a desktop, using your favorite browser, …), you can go further.
But keep in mind, Elive is based on Debian 7.x, an older version. Most howtos you’ll find will be outdated or for Debian 9.x and up.
But there is a good chance you’ll just get the steam Linux-binary, install it and it will work … Than there could be some 3D issues, but no time to worry here. Without knowing your GPU and Linux knowledge it is difficult to answer this on whole. I don’t want to write this book.
and if we are here, remember Steam is saying they will bring the games to Linux, since the very beginning, there is a lot of work to do. only 13 of 35 games in my List could be installed at Linux. Also the Steam-Hardware is working with Linux, but the publisher still are windows fixed.
And if steam is not pleasing you, there is still the 'play-on-Linux Project, more based on Wine.
But this topic is so special and too much to discuss in an Elive Forum.
… and if these topics are covered, we can come to 32bit vs. 64bit.