Reviews, discovery queues, search, crowdsourced tagging, minitrailers, events, splash ads, wishlist, an entire overlay to support controller configuration (and

Reviews, discovery queues, search, crowdsourced tagging, minitrailers, events, splash ads, wishlist, an entire overlay to support controller configuration (and any controller) for any videogame that's accessed through steam (even non-steam games). Discussions, mods, leaderboards, market. I suspect I can continue. You could argue some of this features are not necessary "storefront", but the line is blurry. The point is when I want to discover new games, I go to Steam. I'm not sure what else I could ask for as a storefront.