The Sims 4 is the latest game to be offered free through Origin's Game Time promotion.
The Sims 4 is now free to download from Origin, granting you a 48 hour window to try it out and see if you want to pay for the full game.
The free time starts counting as soon as you start the game up post-install, and counts down continuously - no pausing when you're not actually playing.
The Sims 4 joins games like Titanfall and Sim City in offering this kind of trial. Origin also throws free weeks, some times.