Single-player games like String Theory
Below are 9 single-player Steam games similar to String Theory, 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 String Theory page.
Ranked picks
- 1

MULTIVERSAL TIME SURVIVORS
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Strategy with String Theory.
Classic Spin on Survivors Genre. Choose one among many characters and Travel though multimple dimensions battling foes.
- 2

Realm of oblivion(soul like)
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Indie with String Theory.
《BLACK MYTH SHIKONG》is an action game similar to the Galactic Castlevania.Players will take on the role of a somewhat mediocre and decadent young girl, battling the Devourer in a vast world that combines magic and modern civilization.
- 3

Mulite Sword Man
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Strategy with String Theory.
MULITE is a light action role-playing game that focuses on the collocating of operation and gameplay. The game provides a lot of equipment and skills. Based on the retro action role-playing game mechanism and combined with the Rogue-lite elements, this game abandons the traditional RPG lengthy dialogues and boring tasks, enabling players...
- 4

TORINTO
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Strategy with String Theory.
TORINTO is a run ‘n’ gun game with a medieval twist. Blades take the place of bullets as the heroes traverse side-scrolling stages, from forests and fields to castle walls, quelling the heartless fiends that now roam the land.
- 5

BOXPAST LOV3YOU
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Indie with String Theory.
Play as a PC and destroy viruses!
- 6

ICEY
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and RPG with String Theory.
ICEY is a 2D side-scrolling action game and a META game in disguise. As you follow the narrator's omnipresent voice, you will see through ICEY's eyes and learn the truth about her world. The narrator will constantly urge you in one direction, but you must ask, "Why? Why am I following his directions?“ Obey? Rebel?
- 7

Crazy Flasher 7 Mercenary Empire(stand-alone Version)
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Indie with String Theory.
The classic old web game action role-playing in 2010, fighting zombies in the last days, horizontal 2D games, firearms, cold weapons, mercenaries, gangs... Now a stand-alone version without internet is launched.
- 8

Abyss Odyssey
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Action and Indie with String Theory.
From indie Chilean developer ACE Team comes a new side-scrolling action adventure game featuring a complex fighting engine in procedurally generated levels that destines its three warriors to battle a different abyss each time! Choose your hero and also learn to possess your enemies in the abyss…
- 9

Musician
Single-player alternative to String Theory — playable solo, no multiplayer required. Shares Indie and Simulation with String Theory.
A musician is a game that can generate animated music, and you can freely import the MIDI orbit in the game. Play the favorite music and write the music that belongs to your own step by step.