Half-Life: Alyx Can Now Simulate Liquid in Bottles

Bottles in Half-Life: Alyx now have liquid inside them that reacts to the player’s movements. The new feature feels super realistic. Also, if you shake bottles hard enough, it may cause some types of liquid to foam.

It kind of awesome as it's just a small feature that is not essential for the experience, but the team still decided to add for fans. 

For those of you interested, the update also adds subtitles in more languages, gets the UI quicker when jumping from menus, and improves add-on management UI. You can learn more about the latest update here. What do you think about the possibilities of Source 2, our fellow developers?