PixelJunk Shooter Ultimate is a twin-stick shooter game developed by Double Eleven. It is the remastered version of PixelJunk Shooter and PixelJunk Shooter 2, which are both included in the game, making it the fourth and fifth parts of the franchise. The remastered version brings a new game mode, called Ultimate, which changes the design style of the game. Players can choose between Classic and Ultimate modes and progress can be transferred between the two.

The game is a top-down shooter that focuses on exploring planets and fighting other explorers. The objective of every level is to find and save trapped scientists out of pits and grooves in the rock. The game offers a wide variety of guns to fight enemies and destroy rocks, as well as fluid controlling abilities of the ship that can transfer water, magma, and ferrofluid. There are a total of 30 levels, divided into six stages, each ending with a boss fight. In addition to the single-player campaign, the game also offers multiplayer modes, including The League Battle matches that utilize the Capture-The-Flag mechanics and force all players to defend their territory.