Rock Bottom is currently in an open beta stage. What that means in this case is that the game is still far from done, but the features and changes that are implemented can be tested by anyone.
Although anyone can try the game in its current state, we also have a selective beta program which allows us to communicate with a smaller group of hand-picked beta testers. If you want to be part of this testing team, and are willing to provide feedback and share your opinion of new content, you can request to join via the #rockbottom channel on our Discord Server. We look forward to hearing your thoughts on the game!