The Sims 4, meaning you can download it now and enjoy a free 48 hours of playing God. To do just that, get your godly ass to Origin.
Those 48 hours are real-time rather than in-game, so unless you're planning an unadvised binge you won't get the full two days of free-ness. You can start the free time whenever you want, however, as the 48-hour countdown only begins after you launch the game for the first time. Also, if you later buy The Sims 4 then your Game Time progress does transfer over.