You can hang Christmas lights and build snowmen in the winter time, you can carve pumpkins in the fall time, and you can have water balloon fights just about any time. You also get holidays in each season that take the place of a holiday we have in the real world. In seasons you get multiple different weather changes like rain, hail, fog, wind, cloudy days, and sunny days. You can go into your options and change how long you would like each season to last as well. It adds four seasons to your game: spring, winter, summer, and fall. The Sims 3: Seasons is one of the most basic expansion packs that you can purchase for your Sims 3 game.