Single-player games like Project Sphinx
Below are 8 single-player Steam games similar to Project Sphinx, 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 Project Sphinx page.
Ranked picks
- 1
RaviWar 1: A Perfect Sonday
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
A free first-person adventure of puzzles and precarious jumps. It is 2077. The world lives inside Takarek, a tower of 17,769 floors, and Consensus has decided what everyone in it thinks for forty years. You are twenty, new to the job of deprecating data. Tonight you keep one file to save the world.
- 2
Peer-2-Pizza
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
The future of pizza delivery is here: deliver pizza through the power of the internet today! And when delivering, time moves when you move. So jump, dash, and dive your way through a network of obstacles and challenges, reach the customer, and do one very important job: deliver the pizza.
- 3
Rayborne
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
Rayborne is a puzzle game built around lasers, physics, and real-time light simulation. Solve handcrafted challenges by shaping light itself while uncovering the mystery behind a questionable AI research facility.
- 4
Out of Bounds
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
Out of Bounds is a puzzle shooter where you need to "create" a game while "fixing" bugs!
- 5
Grav My Balls
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Indie and Adventure with Project Sphinx.
Grav your balls and let them fly! You are trapped and must escape with the help of the strange tech built into your hands. Launch your balls to change gravity on objects blocking your path. Use your mind and your new powers to solve gravity and mind bending puzzles.
- 6
Work In Progress
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
Work In Progress is a first-person adventure game set in the universe of an abandoned video game: Journey through environments with distinct styles, explore, solve physics-based puzzles, battle enemies, and discover why this game was never finished.
- 7
Portal 2
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Adventure with Project Sphinx.
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
- 8
Fail to Win
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
Abuse the game's quirks to progress through slapstick deathtrap puzzles, uncovering the secrets of a world going through an identity crisis.