Single-player games like Cubic Cosmos
Below are 13 single-player Steam games similar to Cubic Cosmos, 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 Cubic Cosmos page.
Ranked picks
- 1

Dream of Corpse Lady
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Cards, battle! Someone woke up the sleeping Corpse Lady... Perhaps, the world needs to pay a price for the awakening... In this game, you will play the role of the awakened Corpse Lady, try various strange construction combinations, discover powerful opponents, and then knock them all down!
- 2

Slay the Spire 2
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
The iconic roguelike deckbuilder returns. Craft a unique deck, encounter bizarre creatures, and discover relics of immense power in Slay the Spire 2!
- 3

The Royal Writ
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Sacrifice creates stories in this medieval roguelike deckbuilder. Watch your cards march to glory or permanent death as they battle toward the enemy. Each fallen hero becomes part of your kingdom's legend. Command wisely... some sacrifices are necessary.
- 4

FrostBound
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
FrostBound is a roguelike deck-building tower defense set in an endless winter. Build your base, master 500+ cards, and withstand relentless waves to end the eternal frost.
- 5

LONESTAR
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
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!
- 6

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
From the creators of Vampire Survivors comes a turbo-charged, turn-based roguelite deckbuilder! Deal world-ending combos, blitz through infested dungeons, and master the Turboturn to obliterate hordes of familiar foes with a chaotic hand of cards.
- 7

StarVaders
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Pilot a powerful mech to fight off the alien invasion in this ULTIMATE fusion of deckbuilding and grid-based tactics. Discover game-breaking combos, rewind time to alter your fate, and protect the future of humanity in this endlessly replayable roguelike.
- 8

Breach Wanderers
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
A fresh take on Roguelike Deckbuilders that lets you fine-tune your decks before each run to adapt your strategy on your way to victory. Over 1,200 cards to choose from, ten characters with their own set of unique skills, and dozens of items and missions to evolve your tactics.
- 9

Slay the Spire
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
We fused card games and roguelikes together to make the best single player deckbuilder we could. Craft a unique deck, encounter bizarre creatures, discover relics of immense power, and Slay the Spire!
- 10

Monster Train
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Monster Train is a strategic roguelike deck building game with a twist. Set on a train to hell, you’ll use tactical decision making to defend multiple vertical battlegrounds. With real time competitive multiplayer and endless replayability, Monster Train is always on time.
- 11

Inscryption
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Inscryption is an inky black card-based odyssey that blends the deckbuilding roguelike, escape-room style puzzles, and psychological horror into a blood-laced smoothie. Darker still are the secrets inscrybed upon the cards...
- 12

Vault of the Void
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Vault of the Void is a fast-paced roguelike deckbuilder where the power is in your hands. Continuously customise your deck, crafting powerful combos and ingenious strategies. Upgrade your cards with Void Stones, infusing them with new abilities to help defeat the minions of The Void!
- 13

Looper Tactics
Single-player alternative to Cubic Cosmos — playable solo, no multiplayer required. Shares Strategy with Cubic Cosmos.
Welcome again, wandering soul. Will this be the time of your success? Watch your steps as you advance in this roguelike-deck builder and engage in auto-battler card encounters of increasing difficulty. Get stronger in each battle, rise from the ashes, and break free from endless reincarnation!