Single-player games like Polygon War
Below are 8 single-player Steam games similar to Polygon War, 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 Polygon War page.
Ranked picks
- 1

Sektori
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Sektori is an intense, fast paced twin-stick shooter infused with hard hitting techno music. A game where the high-adrenaline gameplay, visuals, and music come together to transport you into another state of consciousness.
- 2

UnderMine
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
An action-adventure roguelike with a bit of RPG tossed in. Adventure deep into the UnderMine and discover powerful relics, deadly enemies, hidden secrets, and a few friends to help along the way.
- 3

Achilles: Survivor
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Thousands of enemies. One survivor. Fight like a demigod, build deadly defenses, and grow stronger after every run in this fast-paced bullet heaven set in mythic Greece.
- 4

Monsters are Coming!
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Beware, Monsters are Coming! In this Tower-Survivor rogue-lite, you protect an ever-moving city from unrelenting hordes. Gather resources, fortify defences, and survive for as long as you can. Will you reach the Ark?
- 5

Gunbrella
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Uncover the dark secrets of a gritty, tangled metropolis and battle diabolic villains with your trusty Gunbrella, a bulletproof brolly that doubles as a firearm.
- 6

Atomicrops
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
A twin-stick, bullet-hell, roguelite where you must cultivate and defend the last farm in a post-apocalyptic wasteland. Farm mutated crops, upgrade your weapons, marry townsfolk, and kill every mutant creature that tries to invade your homestead! Yee-haw!
- 7

Make Way
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Speed around loops, dart through train crossings, drift around helter skelters, and unleash wacky weaponry in this modern take on classic top-down multiplayer racing games such as Micro Machines and Mashed. The twist? You build the track.
- 8

Enter the Gungeon
Single-player alternative to Polygon War — playable solo, no multiplayer required. Shares Action with Polygon War.
Enter the Gungeon is a bullet hell dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.