Planets.nu uses four different systems to build starships. These systems are:
This is the original build queue from VGAP3, and is sometimes referred to as the Classic Queue. This queue has a hard ship limit and the build starbase is sequential.
This build queue has a soft ship limit with random builds. This is currently used in Standard and Championship games.
This is an experimental queue where builds are allocated based on the portion of owned planets a player controls.
This build queue has individual ship limits based on the number of planets a player has. It is currently used in MvM and Beginner games.