Single-player games like Main Sequence
Below are 8 single-player Steam games similar to Main Sequence, 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 Main Sequence page.
Ranked picks
- 1
Stellar Shipyard
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Stellar Shipyard is a space colony sandbox where you design modular ships and stations, and automate resource production using drones and workers. Let the automated systems fly even the most improvised designs. Face rival factions and threats solo, or alongside friends as allies or rivals.
- 2
Belts of Iron
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Explore, automate, and fight in this new open world factory automation game. Build factories connected by miles of conveyor belts. Manage power and fluid networks. Explore procedurally generated worlds filled with resources to harvest and hostile creatures to defeat. Play solo or online with friends
- 3
SpaceCraft
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Indie and Simulation with Main Sequence.
The Universe is yours. SpaceCraft is an online space exploration and building game. Explore a vast galaxy of solar systems and planets, mine and craft resources, design and build ships, automate planetary bases and interplanetary logistics, trade and cooperate.
- 4
Alchemy Factory
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Craft your workshop as an alchemist! Harness arcane devices to automate crafting. Sell alchemical goods, fulfill commissions, and rise to become a renowned alchemy magnate. Multiplayer Supported! Invite master designers to (ahem) contribute their expertise—let them optimize your production lines!
- 5
MORS
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Build an automated factory on a true-scale Mars streamed from real NASA terrain. Mine, smelt and belt resources, run trains between outposts, master chemistry, and grow from a lone lander into a planet-spanning industry while the real Martian weather does its worst.
- 6
Starvector
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Eat a snack while you watch an entire planet burn in your image.
- 7
FOUNDRY
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Build a sophisticated robot factory optimized to perfection in an infinite voxel world. Mine and harvest resources, automate your production lines and manage complex systems while researching your way to become the galaxy’s leading robotics megacorp.
- 8
Factorio
Single-player alternative to Main Sequence — playable solo, no multiplayer required. Shares Strategy and Indie with Main Sequence.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.