If you haven’t sprung on getting The Sims 4 since it came out, then this special deal is for you. The base game is available for free via Origins for PC users. Head to the Origin client or their online storefront to claim the game. It’s going to be available for free until May 28th. And no, it isn’t a demo version, you get to keep the game after the promo is done. Of course, the expansion packs will still need to be purchased. 

Source: Polygon