Gravhounds is listed as a cooperative Xbox Game Preview
The store identifies the game as a work-in-progress preview for one to four players.

Building a base on a hostile planet is only the beginning in Gravhounds: after gathering resources, the team must try to get out with what it has collected. Xbox Wire listed the game for November 2, with Game Pass and Xbox Play Anywhere.
According to the official description, one to four players can cooperate to build and defend a base, gather resources and attempt extraction. Staying longer may bring greater rewards but also increases the danger.
The Brazilian Xbox Store labels the game Game Preview and lists Xbox Series X|S and PC. It is a work in progress rather than a 1.0 launch, and the schedule warns that dates may change. Brazilian Portuguese in-game support remains unconfirmed.

