Planets.nu uses four different systems to build starships. These systems are as follows:
This build queue is close to the original VGA Planets 3.0 and is sometimes referred to as the Classic Queue. These types of games have a hard ship limit and ship builds are sequentially allocated.
This build queue is available to players who wish to create a custom experience. Games with this build queue have a soft ship limit and ship builds are randomly allocated. This build queue was the default for all Standard games from shortly after its introduction to January 2021.
Effective January 2021, this build queue is the default for all Standard games. Games with this build queue have a hard ship limit and ship builds are allocated based on the portion of owned planets a player controls.
This build queue is currenty used in Mentor vs Midshipmen and Beginner challenges, and it is available for custom use. These types of games have individual ship limits based on the total number of planets in a player's empire.