Asteroids ++ turns the familiar business of clearing space rocks into a planet-hopping campaign. In its 2450 setting, a distant moon has exploded, scattering asteroids across the solar system; you take command of a ship and travel between planets to deal with the fallout. Sectors are randomly generated from a set seed when a game begins, giving each run a defined basis for its layouts.
Ship-building is central to the action. The shop lets players buy and customize parts, combining weapons, abilities, and utilities into a loadout drawn from more than a million possible combinations. Homing rockets target the largest asteroids, while a Timestop ability can halt time. Threats also vary: yellow asteroids break into smaller pieces, and UFOs imitate the player's weapons. Those details make each encounter about more than simply firing at a field of rocks.
The game also offers campaigns and a Sandbox Mode, where players can spawn asteroids they own from their inventory. Dropped items can unlock songs and additional campaigns, while seasonal campaign additions and weekly planet events provide other listed activities.