A Steam Community Group Announcement reveals plans for Sector Zero, an expansion coming later this year to StarDrive 2, Zero Sum Games' sci-fi 4X strategy game for Windows, OS X, and Linux. They are celebrating the news by offering a 50% discount on the game and a 75% discount on the original StarDrive for the next week. Here's a rundown on the expansion:

• Sectors mechanic. An entirely new way to visualize and conquer the galaxy. The concept of sectors reinvigorates the 4x’s of StarDrive 2. In the early-game exploration phase, Sectors provide short-term goals as the targets of your exploration. As you enter a sector for the first time, its secrets are revealed. You might find one of Sector Zero's new quest lines or events. You may find subspace anomalies, the wreckage from ancient battles, and many more new and exciting terrain features.
• Deep Space Construction mechanics. These allow you to claim sectors for your empire and to exploit the resources found there. Build a Star Fortress at the edge of a wormhole to control the passage, or a mining base in a deep space field of precious metals. Every space station can be upgraded with multiple improvements to secure your territory.
• Expanded Galaxy size, allowing galaxies up to 4 times larger than those available in the base StarDrive 2 game.
• Dozens of new quests and events to continue to bring the lore of the StarDrive universe to life.
• New technologies to research.
• New Racial traits to further customize your experience.
• Two new Victory Conditions: the scientific victory, and a story-based victory.