This year's Free RPG Day took place on the 21st of last month. Like most years, Paizo released a short adventure for it. This year's is Risen from the Sands by Rob McCreary (the pdf is available for free at the link). It's a short dungeon crawl playable in just a few hours (probably only one session for most groups). Set in Osirion, it works well as either a one-off adventure or as a brief interlude in an ongoing campaign.
There's not really anything about Risen from the Sands that makes one go “Wow!” It's a straight-forward adventure that's not particularly original and has nothing that really makes it stand out from other adventures. However, there's nothing particularly bad about the adventure either. It does its job and it does it competently. With a skilful GM, it will provide a few hours of fun for any group.