Single-player games like Dark Old Sun II: Unspace
Below are 9 single-player Steam games similar to Dark Old Sun II: Unspace, 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 Dark Old Sun II: Unspace page.
Ranked picks
- 1
Nuclear Throne
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Nuclear Throne is a post-apocalyptic roguelike-like top-down shooter. Not 'the final hope of humanity' post-apocalyptic, but 'humanity is extinct and mutants and monsters now roam the world' post-apocalyptic. Can you reach the Nuclear Throne?
- 2
Blacksea Odyssey
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Enter the Blacksea Odyssey, a violent top-down rogue-lite space shoot ‘em up RPG brimming with colossal creatures and runic technologies. Explore dangerous, interstellar spacescapes as you hunt enormous space-behemoths with a harpoon and rune-infused spears.
- 3
Heat Signature
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Heat Signature is a game from the developers of Gunpoint where you break into spaceships, make terrible mistakes, and think of clever ways out of them. You take a mission, fly to the target ship, sneak inside, and make clever use of your gadgets to distract, ambush and take out the crew.
- 4
CRYPTARK
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious.
- 5
Larva Mortus
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Larva Mortus is a fast-paced hack and slash top-down shooter. As an agent specializing in exorcism, you are tasked to hunt monsters of the supernatural in a dark, ominous, and randomly generated atmosphere full of undead, terrifying and demonic nightmares.
- 6
Teleglitch: Die More Edition
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
In a cold, dark future dominated by mega-corporations, a small lonely planet on the edge of habitable space is the site of a shadowy research facility specializing in necrotic tissue reactivation. You are a scientist who has suddenly awoken to the realization that you are the lone survivor.
- 7
ArcRunner
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Traverse 'The Arc' in this beautiful, Cyberpunk-styled action rogue-lite as you attempt to reset an evil rogue AI. Experiment with different weapons and augments as you fight hordes of machines programmed for your annihilation! Collect Nanites & power-up after every run either solo or with friends!
- 8
Halls of Torment
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action and Indie with Dark Old Sun II: Unspace.
Slay hordes of terrifying monsters in this horde survival roguelite. Descend into the Halls of Torment where the Lords of the underworld await you. Treasures, magical trinkets, and a growing cast of heroes will grant you the power to vanquish these horrors from beyond. How long can you survive?
- 9
Dark Old Sun
Single-player alternative to Dark Old Sun II: Unspace — playable solo, no multiplayer required. Shares Action with Dark Old Sun II: Unspace.
A shoot'em up, with focus on choice and progressiveness, so you can choose between a wide selection of weapons, and upgrade them becoming way more powerfull as you play.Big multi-phase bosses and a dramatic story.