Single-player games like Lord of Rigel
Below are 9 single-player Steam games similar to Lord of Rigel, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Lord of Rigel page.
Ranked picks
- 1
Terra Invicta
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
- 2
Stellaris
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
- 3
Imperialist
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Indie with Lord of Rigel.
Can you exploit the New World to control the Old? Lead your nation over five centuries of history in this 4X Strategy game. Build production chains, manage logistics, grow your Empire, and outmanoeuvre rivals diplomatically or on the battlefield, to become history's first Superpower.
- 4
Sid Meier's Civilization VII
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
The award-winning strategy game franchise returns with a revolutionary new chapter. Sid Meier's Civilization® VII empowers you to build the greatest empire the world has ever known!
- 5
Falling Frontier
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
Conquer a vast procedurally generated star system in Falling Frontier, a sci-fi RTS where intel and logistics are decisive factors. Design ships and raid enemy supply lines, lay minefields and construct recon stations, and ambush enemy forces within asteroid fields and nebulae.
- 6
Fragile Existence
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
Save humanity from the brink of extinction in this sci-fi strategy game of survival. Travel among the stars to seek out resources, establish and develop colonies to sustain civilization, and grow your military might to push back against an overwhelming threat.
- 7
ENDLESS™ Legend 2
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
Lead your people to victory on an ever-evolving world in this strategy game featuring asymmetric factions led by powerful heroes. Build your empire, wield political influence, and raise grand armies to wage war in a race to uncover dark secrets buried within the planet.
- 8
NEBULOUS: Fleet Command
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy and Simulation with Lord of Rigel.
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
- 9
Master of Orion 2
Single-player alternative to Lord of Rigel — playable solo, no multiplayer required. Shares Strategy with Lord of Rigel.
Forge an empire in a universe where population growth is stripping away planetary resources. Colonize unknown planets and trade with other races for their knowledge.