Single-player games like Union Of Rivals
Below are 10 single-player Steam games similar to Union Of Rivals, 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 Union Of Rivals page.
Ranked picks
- 1

Arc of Icarus
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Indie with Union Of Rivals.
Build and lead your colony on a lost ringworld, where deadly conditions await on both sides while the world keeps turning! Progress through technological evolution, survive cultural revolution, and govern with a wise and steady hand!
- 2

Times of Progress
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Simulation with Union Of Rivals.
Times of Progress is a City Builder set during the Industrial Revolution. Build industries to extract natural resources. Produce goods to satisfy the population. Manage transportation routes by train and ship. Expand on procedurally generated maps and trade with nearby cities.
- 3

Captain of Industry
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Indie with Union Of Rivals.
Build an industrial empire on a remote island. Mine resources, reshape terrain with excavators, grow food, construct factories, lay train tracks, and trade with the outside world. Research 100+ technologies to advance from basic metal smelting all the way to nuclear power and space flight.
- 4

Whiskerwood
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Simulation with Union Of Rivals.
Establish a home for your industrious mice under the oppressive paw of your cat overlords in this city builder featuring complex simulations, intricate production chains, and the age-old rivalry between cat and mouse.
- 5

Nova Roma
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Simulation with Union Of Rivals.
The glory of Rome is at your fingertips in this city-building game where you must appease the gods, enact laws, and develop complex supply chains to meet the needs of your citizens.
- 6

Here Comes The Swarm
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Indie with Union Of Rivals.
Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?
- 7

Railway Empire 2
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Simulation with Union Of Rivals.
Don the coat of a clever entrepreneur, take over a small railway company in the early 1800s and turn your steam engines into the workhorses of the economy. Grow your company into the largest railway company of the continent and outsmart your competitors.
- 8

RAILGRADE
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Strategy and Simulation with Union Of Rivals.
RAILGRADE is the train RTS game! Construct dense vertical railroads, build cities, construct vast factory chains with train automation! Restore an off world colony's economy all in the intense story driven campaign or relaxing sandbox mode!
- 9

Bloody Trapland
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Indie with Union Of Rivals.
Bloody Trapland is a fast-paced multiplayer platformer where the levels are filled with dozens of dangerous traps and tricky jumps that stand in your way! Play co-op with your friends or take on the challenges on your own. With support for up to 4 players at once, local and/or online.
- 10

Bloody Trapland 2: Curiosity
Single-player alternative to Union Of Rivals — playable solo, no multiplayer required. Shares Indie with Union Of Rivals.
Take on the hard yet fair world of Bloody Trapland. Jump, slide, dash and dodge your way through the many deadly levels. Find secrets, solve puzzles, unlock mysteries and unravel the story. Go at it alone or bring your friends along for a co-op experience like no other. 1-4 players online and/or splitscreen.