Vessel

Vessel

Released Aug 2026

“VESSEL” is a two-player online horror puzzle game. Experience varied puzzles, monster chases, boss battles and item collection alongside a rich story. Join forces with your friend and help the siblings escape the haunted hospital!

18% positive · 141 reviews
Not yet
Released, but still in active development
High confidence
Active Development
Not yet
Released, but still in active development
High confidence
Active Development

Where to buy

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Evaluation

Vessel launched on August 5, 2026 as the debut title from a small indie team (OJStudio). The launch was rocky — the developer openly acknowledged a buggy 1.0 release and immediately began an intensive patching campaign, shipping 21 patches in the first ten days. On August 6, 2026, the team posted a public apology and committed to rapid bug fixing. On August 13, 2026, the developer posted a detailed retrospective acknowledging design missteps and laid out specific future plans, including: adding a checkpoint-based save-loading feature so players don't have to restart from the beginning, continuing to improve in-game guidance and puzzle hints, and adding more dialogue prompts and map icon guides. The developer explicitly stated they "will keep optimizing this game until it becomes something that both our players and our team can be satisfied with." The launch letter from August 5, 2026 further confirms that the team views this release as "only our first step" and commits to improving the game in an "organized and steady manner." This is a game that has just launched and is in the middle of an active, intensive post-launch improvement campaign with clearly stated future work still underway.
Evidence
Developer retrospective one week after launch outlines future plans: a new checkpoint save feature, continued guidance improvements, and more dialogue/map hints. Developer commits to optimizing until both players and team are satisfied.
news post · Aug 13, 2026 source development ongoing
high
Launch letter states the release is 'only our first step' and commits to continuing improvement of Vessel in an organized and steady manner while also developing future projects.
news post · Aug 5, 2026 source development ongoing
high

Media

Details

Developer
Publisher
OJStudio
Achievements
27
Platform
Windows
Controller
—
Steam Deck
Unsupported
Players
Multiplayer · Co-op

About this game

The game is set in the First General Hospital of Yuanwang City, located in the eastern region of a certain country. Two players can take on the roles of the Lin siblings and experience a series of mysterious events in this hospital. The gameplay is designed to fully accommodate dual-player mechanics, featuring encounters such as monster chases, mind-bending puzzles, endless corridors that require both players to gather different clues to proceed, escape rooms, and thrilling dual-player boss battles! Through conversations with other individuals (or creatures) in the hospital, as well as textual and video content, uncover the secrets hidden within this hospital!

The Lin siblings

On their 16th birthday, their mother was brutally murdered. While fleeing toward the subway, they were caught in a mysterious "Black Flame Incident" and fell unconscious on the spot. When they awoke, they found themselves in an eerily familiar hospital.

Rich puzzles and battles

More thrilling experiences await you and your friend to unlock together~!

Last evaluated Aug 17, 2026
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