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
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.
- 2
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.
- 3
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!
- 4
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.
- 5
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!
- 6
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.
- 7
Saving Yellow Ox
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Indie with Project Sphinx.
Saving Yellow Ox is a chaotic co-op climbing game where 2–4 players race through a floating countryside full of traps, moving objects, and ridiculous obstacles. A UFO has abducted the yellow ox, and the only way to save it is to climb higher, push your rivals, rewind time, and survive the madness.
- 8
Bulletstorm: Full Clip Edition
Single-player alternative to Project Sphinx — playable solo, no multiplayer required. Shares Action and Adventure with Project Sphinx.
Step into the boots of Grayson Hunt after a crash landing on an old resort planet forces him to make a hard choice: survival or revenge. Execute masterful kills with Bulletstorm: Full Clip Edition’s unique combat system that rewards you for performing the most creative and deadly kills imaginable.