Sea of Thieves is rated T for Teen by the ESRB.  From the ESRB: "This is an action-adventure game in which players assume the role of a pirate exploring a vast open world of oceans and islands. From a first-person perspective, players sail ships, search for treasure, and engage in sea battles with rivals. On land, players can shoot and slash at skeleton-like creatures; enemies generally disappear with a wisp of smoke. At sea, players can shoot cannons at opposing ships, causing them to capsize and sink. During the course of the game, players' character can drink mugs of grog, resulting in a screen-blurring effect; belching and hiccup sounds are sometimes heard. Characters may also vomit after drinking too much grog; green vomit is sometimes seen dripping down the screen."