Oreilly's newest game, Everything, was released on PS4 earlier this month, and it has kicked up the same sort of "WHAT IS THIS" hand-wringing.
Everything promises the player just that: to play as anything in the known universe. From zooplankton to galaxies, the player transfers control from object to object, sometimes building up little parades of otherwise disparate items into a pseduo-Katamari collection. By all accounts, Everything runs wide and meandering, artful and contemplative.
There are some games that elicit striking similar responses in reviews, and (generally speaking), the response to Everything is, "It's not a game! Wait, we mean it is a game! Wait, we mean: do we even care what 'games' are anymore? Wait, we mean: Please, just let us be because we're trying our best and just want to play games. Wait, this isn't a game..." and so on.
Everything comes to PC and Mac on April 21, and I absolutely cannot wait. Anything that makes people question the arbitrary titles we foist upon media (or objects, or people) is A-OK in my book.