Played it during the closed beta, thought it was fun for about half an hour. Would never pay anything for it tbh. It has some mechanics in common with other Ubisoft games (like material harvesting and crafting, sort of like what you'd see in Division 2 but with slightly more depth), except it doesn't have the depth or world development of their other games. You just sail your ship around and sink other ships. Sometimes you land at other towns or encampments and get quests that require you to sink other ships or carry cargo around.
Wash rinse repeat. It was also awkward harvesting resources by... pulling up close to the shore on your *ship* and pressing a button to saw through trees and stuff. From the water.
RS3: UltimaSuende
https://letterboxd.com/BMovieBro/