Game Tag Icons
On the Steam store, games list features that they support with little icons to go with each feature (like achievements, controller support, etc). There's also a system that allows users to tag a game with more specific items, like graphical style, gameplay features or narrative elements.
I created some icons based on a 20px grid to illustrate some of the tags and mocked up what it might look like. However, since the tags are user-generated, it would be difficult to keep up with all the variations and more obscure tags. The store could possibly keep a large database of icons with aliases for common related terms (similar to FontAwesome) and assign them automatically. I didn't think too in-depth about it, since this was mostly an excuse for me to design some new icons for game-related stuff :)