itch.io

I don't work at itch.io but I would say it is the ability to install, update and run the games more easily, and maybe later integrate achievements/instant messaging (like GOG Galaxy) . As long as it is optional (unlike steam ><) I think this is a great bonus !

So, the gif is misleading because what it actually shows is opening up the native app using a custom protocol (itchio://whatever).

But, in fact, the app is native and the primary use case is to download+install native games.

We plan to support web games (HTML5 + Flash) as well, but it's a bonus/nice-to-have feature to be able to play web games offline / preload them for a let's play or whatever.