https://robertsspaceindustries.com/comm-link//16849-Anniversary-Promotion-Free-Fly-DetailsNovember 23rd through December 1st the game will be free to play. You only need to make a free account (you dont have to buy a package) and log into the PU launcher.
If you decide to buy into the game during the anniversary sale (which should be going on during the same time periord) consider using a SimHQ referral code to get some extra in game goodies. Several people here have them. I'll post mine below.
https://robertsspaceindustries.com/enlist?referral=STAR-BCJZ-5VV2STAR-BCJZ-5VV2
