Single-player games like VOIDSWARM
Below are 9 single-player Steam games similar to VOIDSWARM, 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 VOIDSWARM page.
Ranked picks
- 1

Warfactory: Automation RTS
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Strategy with VOIDSWARM.
Warfactory is an automation RTS where production defines the war effort. Build assembly lines to forge an army of machines, then feed thousands of units into massive real-time battles where every loss must be replaced by your factory.
- 2

Grimstar: Crystals are the New Oil!
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Action and Strategy with VOIDSWARM.
Grimstar is a real-time strategy game with a story-based single-player campaign. Your brother's sudden death has hit you hard, but the laws of the corporation for which he laid down his life dictate that you must take his place until his contract is fulfilled...
- 3

ERA ONE
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Strategy with VOIDSWARM.
Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
- 4

Task Force Admiral - Vol.1: American Carrier Battles
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Action and Strategy with VOIDSWARM.
Experience the thrill of leading American aircraft carriers to victory in this innovative full 3D command simulation wargame set in the Pacific in 1942. First-person or God’s eye, you lead your fleet and planes right from the center of the battle.
- 5

The Scouring
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Action and Strategy with VOIDSWARM.
The Scouring is an RTS with fast pace, high attention to detail and next generation experience. Lead humans or orcs in a Classic Mode or use one of powerful Heroes to fight for victory! Play alone or with friends. Use our modding tools to create maps and custom game modes! Join The Scouring!
- 6

The Mims Beginning
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Strategy with VOIDSWARM.
Experience a mystical journey with the Mims in this strategic god-like adventure—build, grow, protect, and wield divine powers. Now it's completely free! Also check out our other story-rich fantasy game, The End of the Sun, where you become a tracker of mythical beings and unravel mysteries.
- 7

Calyx
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Strategy with VOIDSWARM.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 8

Here Comes The Swarm
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required. Shares Strategy with VOIDSWARM.
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?
- 9

Happy Hour Hero
Single-player alternative to VOIDSWARM — playable solo, no multiplayer required.
🥃 Time is short, just like our signature cocktail. Will you make a stir and gain recognition as best bartender in town, or get mixed up and bottle it? 🍸