31st prototype

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Steam

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updated Jul 17, 2026

CA$2.39

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Multipacks (1)

P.I.S. File & 31st prototype

-10%CA$5.38

About 31st prototype

ABOUT STORY
This is a story about one robot who found back her memory in the empty house. She awake on the storm night, but forgot all things, along with the exploration, she found the truth...
It not only a decrypt game, but also a text adventure game.

ABOUT FEATURE
★steampunk theme
★interesting map and personal style illustration
★thought provoking story
★sounds good music (all by real record, not export by midi)
★all the source materials are original by myself
★not hard, relaxed to enjoy it
30minutes left play time

POSTSCRIPT
I'm the author HAIM
The all content of this game is made by myself
The playing time about this game is half an hour left, and not very hard, you can relaxed clear it.
The story was intend to draw a comic, but set aside by some reason.
I very want to make a game in this year, so restart this project.
On the game-making process, i adjusted a lot of detail, so the last version is different from originally story.
The central character robot is originate from my illustration series STEAM STREET .
The music made by 'balloon house' who is my another pen name，
I wish you can enjoy this game.

Game details

Released

Developer

Publisher

Platforms

Steam rating

Positive (100%)

Age ratings

IGRS 3DEJUS LSTEAM_GERMANY 0

Game modes

Single-player

31st prototype price history

Lowest tracked price: CA$1.91 (Jul 7, 2026) · current best: CA$2.39.

31st prototype reviews

100% positive reviews all-time.

31st prototype — frequently asked questions

Where can I buy 31st prototype at the cheapest price?

Right now the cheapest offer for 31st prototype is CA$2.39 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.

What is the lowest price 31st prototype has ever been?

The lowest price KingsPrice has tracked for 31st prototype is CA$1.91 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.

How can I get 31st prototype at a discount?

Create a free price alert on this page and KingsPrice will email you when 31st prototype drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.