Three of the furry Steam Decks were created, and on further inspection, they appear to be built on a Steam Deck OLED model (you can tell from the color of each analog stick). But

Get ready for some serious Cloud Strife action on the bus! Discover how Final Fantasy 7 Rebirth is now Steam Deck Verified.

Per Steam, Civilization VI is 'playable' rather than 'Deck verified'. The gripes listed on the store page are small text (something Civ games do poorly even on PC), non-Deck controller icons here and there, and the on-screen keyboard often requires enabling manually.