https://www.pcgamer.com/best-mini-itx-case/

The mini-ITX case market has exploded in the last few years. People want power in a compact form factor. They want more usable desktop and floor space. With the right components, you no longer need a big PC to handle some hardcore modern gaming—all you need is a small PC case.

If you’re looking to build a new compact PC there are a heap of great options but we've gone ahead and picked out the best mini-ITX cases that we loved working with the most. They're fun, compact, and usually look great when completed. If you want a build that's easy to move and can still kick ass, a mini-ITX rig might be for you.