Lost Prototype

Lost Prototype

Unsorted Games · June 20, 2025 · Horror, Singleplayer, Walking Simulator, First-Person, Linear

Lost Prototype is free to play — no purchase needed. We track it so you know if that ever changes.

PC
Positive90% · 40
This game is free to play. Get it on Steam →

Screenshots

Lost Prototype price

Lost Prototype is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Lost Prototype

Lost Prototype is a ‘game’ created by an unnamed developer.You are asked to try this game...or ‘prototype’ and find a way out.Something is hiding in this prototype or someone,  we don't know.Just avoid getting caught. This game lasts about 10 to 20 minutes and contains flashing lights and sometimes loud noises.(Lost Prototype is a test ‘game’ to train myself on Unreal Engine and especially to make my steamwork account and stuff).

Lost Prototype — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended May 17, 2026
If you don't like navigating a maze while a lame monster chases you while intentional glitches randomly mess with you, then avoid this game. If by some chance that happens to be your thing, have at it. Yeah, I know, that's the whole point of the game, but it frustrated me enough that I didn't even finish the game. Maybe there was some critical game mechanic that I missed somehow, but I don't think so. I don't want to be too harsh here, the game plays perfectly well, and looks o.k. too, but the teleporters and lack of any kind of direction or map made this game just too frustrating. Sort of sad "no, ty" on this one.
2 found this helpful
Recommended Mar 31, 2026
Well, it's free so why not? The game does what it sets out to do... It's exactly as described. Pretty sweet for a first game, IMO. I can totally imagine this as part of a larger project - this being just 1 of 20 levels, or the tutorial, for example. I wish the developer good luck!😊
2 found this helpful
Recommended Mar 17, 2026
I don't know why but How to Play section commentary made me laugh a little. I hope the dev makes more game in the future!
1 found this helpful
Recommended Jul 22, 2026
thanks i hated it 10/10
Not recommended May 9, 2026
Wander around mostly empty rooms, get caught by an entity, boring and pointless.
Recommended Mar 6, 2026
Walked around for 20 minutes not knowing what the ♥♥♥♥ was going on.

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