After its debut at The Game Awards, ATLAS was sold to us as a new survival pirate MMO which would feature 40,000 players on a server and was supposed to be the improved version of Sea of Thieves. The game was originally supposed to release on 11 December but it has been delayed over four times already and is nowhere near ready to compete with Sea of thieves.
Source: N4G PC ATLAS Is sailing into review hell, the launch is sinking fast!