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About 31st Prototype
This is a steampunk puzzle game. player use ↑↓←→to control the robot,press Z/ENTER/SPACE to explore the map, and press X/ESC to save game The frame is sketch style, let you immerse the retro atomospher.
Be the first to review 31st Prototype
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.
Game modes: Single player
Right now the lowest price for 31st Prototype we're tracking is $1.99 at Steam. We compare 1 store and prices refresh every few minutes.
The lowest price we've recorded for 31st Prototype is $1.59 at Steam on October 1, 2026. The current best price is about 25% above that low.
100% of 12 Steam user reviews for 31st Prototype are positive ("Overwhelmingly Positive").
31st Prototype released on May 4, 2021.
31st Prototype is available on PC (Microsoft Windows). It supports single player.
31st Prototype last hit a new low of $1.59 on October 1, 2026 at Steam. Current best price is $1.99. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest 31st Prototype price right now is $1.99 at Steam.
| Store | Price | Buy link |
|---|---|---|
 SteamBest price | $1.99 | Buy 31st Prototype at Steam |
All-time low: $1.59 at Steam on Oct 1, 2026 — the current best price is 25% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
