Minecraft wiki entry for 0x10c, associated text: 0x10c was planned to require its players to pay a monthly subscription fee in order to access the global multiplayer server that was planned to exist, due to the computational cost of simulating the trajectories and onboard systems of all the player's ships, even when the players piloting those ships weren't logged in. A recurring fee would not have been required to play singleplayer, and it's likely there would have been the option to play on smaller, privately hosted servers for free, as in Minecraft. The initial cost of buying the game was planned to start out small and increase as the game was developed, similarly to how Minecraft's price increased during the first few years of its development.