What are some of your most used Windows programs that you would recommend?

I have been a apple owner for the last few years and I’ve kind of lost my “windows touch” but my girlfriend just got a new PC laptop and I was trying to hook it up. Any answer is great. I already installed anti-virus software and got her sims 3 but beyond that she has nothing. You can recommend a game, music editing software, journaling, anything!

I’ve asked a similar question for macs and got a good response so hope you can help. TIA! :)