Games like Project: Zenith Expanse

Spacebase DF-9 is a spaceship colonization sim where players build and manage their own space station. Oversee crew members, manage resources, and defend against threats in this open-ended construction and management game. Your spacebase's survival and growth depend on your strategic decisions and ability to maintain order in the final frontier.

"ENDLESS™ Space 2 is a strategic space opera where you expand your empire, discover ancient artifacts, and engage in interstellar warfare. The Digital Deluxe Edition includes cosmetic bonuses, soundtrack, and access to the GAMES2GETHER community for contributing ideas and feedback. This game takes place in a galaxy originally colonized by the enrocked beings called the 'ENDLESS™'."

"Survivalist: Invisible Strain" is an open-world game about building a community after civilization's collapse. Recruit survivors by earning their loyalty or fear, and manage their needs for food, warmth, and safety from dangers. Interact with living characters who have unique personalities, remember your actions, and give quests. This is the sequel to "Survivalist," but no prior knowledge of the first game is needed.

"Ostranauts is a single-player Role Playing game with excellent gameplay, good graphics, and good music. Players join the cut-off solar system as an independent scavenger, managing a dysfunctional crew and ship to fend off bankruptcy and threats. Every choice made affects the game's outcome, with character customization and a rich, unique atmosphere."

"Starmancer is a single-player Science Fiction Role Playing game with phenomenal gameplay and delightful graphics, but be prepared for lots of grinding and bugs. As a Starmancer AI, construct and manage a space station for human refugees, encountering monsters, alien probing, and forbidden technologies in this vast wilderness of space."

"Helium Rain" is a single-player space simulation game that allows you to manage and expand your own space corporation. You'll explore, trade, and battle your way through a vast, procedurally generated universe, with real-time physics and advanced AI. Your choices will shape the fate of your company and the political landscape of the galaxy.

Project AURA is a post-apocalyptic survival simulation game. Manage a colony of survivors, recover from a global catastrophe, and ensure your people's survival in a harsh, resource-scarce world. Balance the needs of your survivors, research new technologies, and defend against external threats for the preservation of humanity.

Stardeus is a single-player sci-fi colony management simulation game with real-time strategy elements, where you play as an immortal AI with robots and drones at your disposal, tasked to build, manage, and automate a spaceship while ensuring the needs and well-being of human colonists or robotic workers. The game features complex and emergent situations through independent systems, which can be expanded through mods, and offers base building, needs-based AI, and space exploration.

X4: Foundations is a sandbox space simulator that allows players to explore, trade, fight, and build in a vast universe. Take control of your own space empire, where every decision from ship hiring to trade routes has a direct impact on your income and influence. With a dynamic narrative and a variety of factions to interact with, X4: Foundations offers a rich and immersive space experience.

In Terra Invicta, players lead one of several factions responding to an extraterrestrial probe and alien presence mining beyond Earth. As global nations falter, secret coalitions form with competing goals—defense, extermination, worship, negotiation, or alliance with the aliens. Strategic diplomacy, resource management, and covert operations shape humanity’s fate amid an uncertain invasion.