 Obstacles include enemy turrets, black holes, asteroids, and narrow environments which restrict the player's movement.Items include Energy Cells responsible for powering the ship, Chronospheres that rewind back 5 seconds to the mission timer, and Diodes that can unlock up to six ship upgrades, the first of which being an energy shield that protects the ship from damage.Some levels are completed by collecting a set number of items, and other require the player to guide their ship to the end of the level before a time limit expires.