Single-player games like Experiment 73
Below are 8 single-player Steam games similar to Experiment 73, 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 Experiment 73 page.
Ranked picks
- 1

MotionRec
Single-player alternative to Experiment 73 — playable solo, no multiplayer required. Shares Casual with Experiment 73.
MotionRec is a recording puzzle action game where you progress through stages by recording and playing back your own movements.
- 2

INSIDE
Single-player alternative to Experiment 73 — playable solo, no multiplayer required.
Hunted and alone, a boy finds himself drawn into the center of a dark project. INSIDE is a dark, narrative-driven platformer combining intense action with challenging puzzles. It has been critically acclaimed for its moody art style, ambient soundtrack and unsettling atmosphere.
- 3

Braid
Single-player alternative to Experiment 73 — playable solo, no multiplayer required. Shares Strategy and Casual with Experiment 73.
This is the original version of Braid from 2009, which may not work well on newer systems. For an updated version of the game with nicer graphics, more levels and a large amount of developer commentary, see Braid, Anniversary Edition.
- 4

Lair of the Clockwork God
Single-player alternative to Experiment 73 — playable solo, no multiplayer required. Shares Casual with Experiment 73.
A fast-paced Point-and-Click adventure AND an indie platfomer in one! Join adventurer Ben and wannabe indie darling Dan in a race against time to stop all the Apocalypses happening at the same time.
- 5

Portal 2
Single-player alternative to Experiment 73 — playable solo, no multiplayer required.
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
- 6

Celeste
Single-player alternative to Experiment 73 — playable solo, no multiplayer required.
Help Madeline survive her inner demons on her journey to the top of Celeste Mountain, in this super-tight platformer from the creators of TowerFall. Brave hundreds of hand-crafted challenges, uncover devious secrets, and piece together the mystery of the mountain.
- 7

Ynglet
Single-player alternative to Experiment 73 — playable solo, no multiplayer required. Shares Casual with Experiment 73.
In Ynglet, you jump, dash, slide, bounce and float your way through an abstract, effervescent sky. Melt into the reactive, dynamic soundtrack, while beautiful colors make every moment a visual treat.
- 8

Golf Club Nostalgia
Single-player alternative to Experiment 73 — playable solo, no multiplayer required. Shares Casual with Experiment 73.
Human life is wiped out. Earth is now a golf course for the ultra-rich. In this dystopian sports puzzler, play through destroyed brutalist monuments, crumbling shopping malls, and abandoned museums as you piece together the full story of how humanity fell.