Single-player games like Synergy
Below are 16 single-player Steam games similar to Synergy, 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 Synergy page.
Ranked picks
- 1
Imagine Earth
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
Build your own global colonies on distant worlds. Manage energy and resource supplies and produce goods for space trade. Form economic and diplomatic alliances or take over competing corporations. Conduct research to protect your colonists from disasters and avoid a climate crisis.
- 2
United Penguin Kingdom
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
A city-building game where you build a penguin settlement and satisfy the various needs of your penguins while dealing with seals and killer whales. Enjoy the growth of your settlement, become the king, and lead the United Penguin Kingdom.
- 3
Fabledom
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
Set in a wholesome fairytale world, Fabledom is a laid-back City builder. Enjoy the growth of your settlement, interact with your neighbors and defend your kingdom from magical creatures. All to find true love and live happily ever after!
- 4
Pharaoh™: A New Era
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
The legendary city-builder returns! Lead the creation of one of the greatest civilizations the world has ever seen in this HD remake with modernized UI. Build monuments, manage your population and explore 4,000 years of history through over a hundred hours of gameplay.
- 5
Foundation
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
Foundation is a grid-less, laidback medieval city-building game with a focus on organic development, monument construction and resource management.
- 6
Meeple Station
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
Build your way to success! Trade your way to the top! Explore your way to infamy! Do it all your way!
- 7
Stronghold Crusader HD (2012)
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
The highly anticipated sequel to the best-selling Stronghold, Stronghold Crusader HD throws you into historic battles and castle sieges from the Crusades with fiendish AI opponents, new units, 4 historical campaigns and over 100 unique skirmish missions.
- 8
Endzone - A World Apart
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
Endzone is a post-apocalyptic survival city builder, where you start a new civilization with a group of people after an ecological disaster. Build them a new home and ensure their survival in a shattered world, threatened by constant radiation, toxic rain, sandstorms and droughts.
- 9
Tropico 4
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
The world is changing and Tropico is moving with the times - geographical powers rise and fall and the world market is dominated by new players with new demands and offers - and you, as El Presidente, face a whole new set of challenges.
- 10
Frostpunk
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
Frostpunk is the first society survival game. As the ruler of the last city on Earth, it is your duty to manage both its citizens and infrastructure. What decisions will you make to ensure your society's survival? What will you do when pushed to breaking point? Who will you become in the process?
- 11
Surviving the Aftermath
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Simulation with Synergy.
Survive and thrive in a post-apocalyptic future — resources are scarce, but opportunity calls! Build the ultimate disaster proof colony, protect your colonists, and restore civilization to a devastated world.
- 12
Sable
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Indie with Synergy.
Embark on an unique and unforgettable journey and guide Sable through her Gliding; a rite of passage that will take her across vast deserts and mesmerizing landscapes, capped by the remains of spaceships and ancient wonders.
- 13
Rogue Lords
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy with Synergy.
A dark fantasy roguelike where you play as the Devil! Lead famous evil geniuses through events and turn-based fights to spread terror and corruption. Create synergies between your disciples, use your evil powers and take revenge on those miserable Demon Hunters.
- 14
Metal Slug Tactics
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Strategy and Indie with Synergy.
METAL SLUG makes an explosive return! Dive into this dynamic tactical RPG with a roguelite thrill and experience the iconic run'n'gun action of the original series, redefined. Grab your weapons, assemble your squad and conquer the battlefield to defeat the infamous Rebel Army.
- 15
Isbarah
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Indie with Synergy.
Isbarah is a cross-genre of bullet hell and platformer style, it's a hardcore 2d game and each level is a duel boss fight. Players will need to fully understand the boss patterns. It’s built on smartly managing your powers and to use them wisely to survive - everything in our game involves dodging and making smart movements.
- 16
Wondershot
Single-player alternative to Synergy — playable solo, no multiplayer required. Shares Indie with Synergy.
Wondershot is a local multiplayer battle arena! You have only one ammo and one life to defeat your opponent. Each round, your weapon changes and the map does too. No luck, just skill !