Single-player games like Unders_core
Below are 8 single-player Steam games similar to Unders_core, 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 Unders_core page.
Ranked picks
- 1
LONESTAR
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
LONESTAR is a strategic Roguelike spaceship deckbuilder. As a bounty hunter, you will capture criminals scattered across the universe. Win the shockwave battle to gain rewards and vacations. Find treasures, customize spaceships, unlock talents, defeat the felons and be a legend!
- 2
Gordian Quest
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
An epic deckbuilding RPG inspired by old-school classics like Ultima and D&D, using modern gaming concepts like roguelite elements and turnbased strategic combat. Lead and nurture parties of heroes. Forge bonds and discover new skills among them. Guide them to unravel the curses laid upon the lands.
- 3
Deep Sky Derelicts
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
Deep Sky Derelicts is an original combination of turn-based strategy and RPG, enriched with tactical card combat and popular roguelike elements. Explore derelict alien ships, fight, loot and upgrade your gear, all in distinctive retro-futuristic comic book aesthetic style.
- 4
Roguebook
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
Embrace the challenge of a roguelike deckbuilder with unique mechanics from the developers of Faeria and Richard Garfield, creator of Magic: The Gathering™. Build a team of two heroes, unleash powerful combos and defeat the legends of the Roguebook!
- 5
Pirates Outlaws
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
Pirates Outlaws is a roguelike card game in which you navigate dangerous seas and challenge their masters. Your expedition will be full of ambushes and will not be easy. Build your deck and combos to become a reputed pirate.
- 6
SpellRogue
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
SpellRogue is the ultimate tactical turn-based roguelike! Draft from over 350 powerful spells to assemble the perfect combination and crush your enemies in 70+ unique encounters. Face brutal choices, adapt to impossible odds, and strike back at the horrors that destroyed the world.
- 7
Astrea: Six-Sided Oracles
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
Astrea is a DICE-deck-building roguelike that flips the script on deckbuilders by using dice instead of cards and a unique dual “damage” system: Purification vs Corruption. Build a dice pool strong enough to purify Astrea's out-of-control corruption and save the Star System.
- 8
For The Warp
Single-player alternative to Unders_core — playable solo, no multiplayer required. Shares Strategy and Indie with Unders_core.
A roguelike deckbuilding game in space! Explore randomly generated systems, enemies and strange encounters. Build your deck, survive and reach For The Warp gate!