Single-player games like Polydangerous
Below are 9 single-player Steam games similar to Polydangerous, 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 Polydangerous page.
Ranked picks
- 1
Rogue Drone
Single-player alternative to Polydangerous — playable solo, no multiplayer required.
A sci-fi mining and base-building game where efficient mining is the key to survival. Gather crystals, expand your colony, upgrade your defenses, and withstand increasingly dangerous nightly attacks.
- 2
Pax Autocratica
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
Build a grand totalitarian colony and personally storm roguelite battlefields with your soldiers. Shape citizens fears, loyalties, bonds, and feuds. Capture enemies, convert them into true believers. Sacrifice the weak. Feed the strong. Wield absolute power and make every life bend to your will.
- 3
Ironfront Express
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
Upgrade your engine’s arsenal in this bullet hell, tower defense roguelite featuring the most heavily armored locomotive in existence. Engineer and command the Ironfront Express in a unique take on lane defense where you upgrade with specialized turrets, drones, and tactical abilities.
- 4
Tank Lore
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
Tank Lore is stylized action rogue-lite bullet-hell dungeon crawler that can be played solo or co-op where you play as legendary tank heroes fighting in a rebellion against an evil empire.
- 5
OKTORAID
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
A 2-player local co-op base-defense survivor. You're wired together by a power cable — stay close to share power and hit harder. Scavenge scrap, build a fortress of turrets and walls, then survive OKTO's endless robot siege. Fully solo-playable. Couch co-op & Remote Play Together.
- 6
Deep Breach
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
Deploy orbital defenses, fuse experimental turret technologies, and engineer devastating weapon builds in a tactical sci-fi horde survival roguelike. Break shields, shred armor, and adapt to evolving bio-corrupted swarms alongside a damaged tactical AI.
- 7
STEEL VANGUARD:Project ARES
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
Set in a sci-fi world, this top-down shooter challenges you to complete missions and earn the title of “ARES,” the strongest pilot. Collect modules that appear after clearing each wave to customize and upgrade your mech as you see fit, and aim to clear every wave all the way to the end.
- 8
Millennium Conflict
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
You are the last survivor. Capture towers, command a squad of unique generals, and battle through 40 missions across 10 distinct worlds as you fight to reclaim a universe that has fallen to the enemy.
- 9
Hold It In
Single-player alternative to Polydangerous — playable solo, no multiplayer required. Shares Action with Polydangerous.
This game is a brutally hardcore sci-fi tower defense, featuring BBS-era and ASCII graphics. You are a commander who must use everything at your disposal to stop the AI horde from opening the rift, and unleashing a cosmic horror upon the earth.