Board Thread:General Discussion/@comment-26412744-20150518210925/@comment-27336882-20160401094725

“Adding multiplayer support to Subnautica is something we would love to do. In fact, the game was originally conceived of as a co-op experience. However, as we started to develop the game, we skipped multiplayer to be able to release the game faster.

Now we find ourselves in a difficult situation: we all really want co-op player, but adding it would take us many months of work. We almost have to start over from the beginning, as it affects everything. If our small team decided to add multiplayer right now, we probably wouldn’t be able to improve any other aspect of the game for a very long time.

So we’re not sure what we’re going to do, but we’re not working on multiplayer right now. The most important thing is to make sure the exploration, crafting and creature experience is working well. Maybe before v1.0 we’ll figure out a way to hire another team to help us with networking, or maybe we’ll release a new version of the game later that supports co-op (like Klei did with “Don’t Starve Together”).”