Single-player games like Quantum Protocol
Below are 12 single-player Steam games similar to Quantum Protocol, 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 Quantum Protocol page.
Ranked picks
- 1
StarVaders
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
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.
- 2
Card-en-Ciel
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required.
Card-en-Ciel is a roguelite card-battling RPG featuring over 300 different cards and 50 unique vocal songs! Play as Neon, the "Gaming Chair Detective" famous for solving net-crimes, as he encounters a strange new case when he dives into an in-development game world.
- 3
One Step From Eden
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
Build a powerful deck, cast spells on the fly, battle evolving enemies, find game-changing artifacts, make friends or make enemies, just make it to Eden.
- 4
Cobalt Core
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
A sci-fi roguelike deckbuilder with a deep new single-axis spin on tactics games! Dodge missiles, line up your cannons, and blast 'em out of the sky... Then get to the bottom of these time loops, before it's too late!
- 5
Wildfrost
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
Take on the elements in Wildfrost, a tactical roguelike deckbuilder! Journey across a frozen tundra, collecting cards strong enough to banish the eternal winter…
- 6
NEOVERSE
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required.
Neoverse is a beautiful, fantastic game consisting of adventures with thrilling challenges. It is a strategic, action, rogue-lite, deck building game that will test the player’s skill. Start an adventure with unique heroes to save the world along various timelines.
- 7
Monster Train 2
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
Monster Train returns with all new clans, new enemy factions, new challenges, new modes and more! Defend your Pyre in the classic three-tiered, vertical gameplay that made the original roguelike deckbuilder a hit.
- 8
Alina of the Arena
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
A roguelike deckbuilding tactics game that combines elements from 'Slay the Spire' and 'Into the Breach'. Play as a gladiator to survive. With roguelike deckbuilding and hex-based tactics, no longer bound by simple attack and defense. Make use of dodges and knockbacks to stay alive!
- 9
Slay the Spire
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
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
Magic: The Gathering - Duels of the Planeswalkers 2013
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
Play with friends or AI as you travel across fantastic planes to take on new encounters & opponents. Magic 2013 features ten customizable decks, individual records, new items & more!
- 11
Monster Train
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required. Shares Strategy with Quantum Protocol.
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.
- 12
Zero Strain
Single-player alternative to Quantum Protocol — playable solo, no multiplayer required.
Move, shoot, and dodge in this hyper-fast top-down shooter. Descend into the depths of uncharted dimensions and destroy everything in your path!