Project ONe プロジェクト・ワン ～ハロルドはつらいよ～
Developed by Hellshake Yano · Published by Hellshake Yano.
At a glance
Overview
A casual, indie, rpg game by Hellshake Yano, published by Hellshake Yano. — single-player.
Steam’s own one-line description: “Old School RPG. Sorry, Japanese Language Only. It is an old school RPG. In RPG, it enters the genre called puzzle RPG.” — developer/publisher text via the Steam store page.
Reception & community
Review sentiment, ownership and peak-concurrent estimates via SteamSpy; tags are player-voted on Steam. Estimates change over time.
Features & modes
Derived from the gameplay modes and feature categories Steam lists for Project ONe プロジェクト・ワン ～ハロルドはつらいよ～.
| Feature | Supported |
|---|---|
| Single-player | Yes |
| Multiplayer | No |
| Co-op | No |
| Online co-op | No |
| PvP | No |
| Cross-platform multiplayer | No |
| Full controller support | Yes |
| Partial controller support | No |
| Steam Cloud saves | No |
| Steam Achievements | Yes |
System requirements (PC)
As published on the Steam store page. Requirements can change between updates.
Minimum
- OS: Windows 10
- Processor: Core i7 6700K 4.00GHz
- Memory: 16 GB RAM
- Graphics: Geforce TITAN X
- DirectX: Version 12
- Network: Broadband Internet connection
- Storage: SSD 550 MB available space
- Sound Card: High Definition Audio
Supported languages (1)
Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ FAQ
Answered from the official Steam listing as of June 2026. Where something hasn't been announced, we say so rather than guess.
What kind of game is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～?
Steam classifies Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ as a Casual, Indie, RPG game, developed by Hellshake Yano. Old School RPG. Sorry, Japanese Language Only. It is an old school RPG. In RPG, it enters the genre called puzzle RPG.
How much does Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ cost?
As of June 2026, Steam lists Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ at $0.79. Prices and regional pricing change — check the Steam page for the current figure.
Is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ single-player or multiplayer?
Steam lists these modes for Project ONe プロジェクト・ワン ～ハロルドはつらいよ～: Single-player. It lists a single-player mode.
Is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ on PlayStation, Xbox, or Switch?
Our data comes from the Steam (PC) store, which lists Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ for Windows. Console availability isn’t in our Steam-sourced data — check the official site or the console store.
Is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ out yet?
Yes — Steam lists a release date of May 22, 2019.
What platforms is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ on?
Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ is listed for Windows on the Steam (PC) store. Console availability isn't covered by Steam's PC store data — check the official channels.
Is Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ single-player or multiplayer?
Steam lists these modes: Single-player.
How much does Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ cost?
Steam lists it at $0.79.
Does Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ have achievements?
Yes — Steam lists 9 achievements for Project ONe プロジェクト・ワン ～ハロルドはつらいよ～.
Who made Project ONe プロジェクト・ワン ～ハロルドはつらいよ～?
Project ONe プロジェクト・ワン ～ハロルドはつらいよ～ is developed by Hellshake Yano and published by Hellshake Yano..
Where to get Project ONe プロジェクト・ワン ～ハロルドはつらいよ～
We don't sell games or track prices — this links to the official Steam store page.
View on Steam →Listing details from Valve's public Steam store data. Not affiliated with Valve/Steam, Hellshake Yano..