Strategy RPG Adventure Massively Multiplayer Free To Play

Uncharted Waters Online

by KOEI TECMO GAMES CO., LTD.·published by Papaya Play

Steam · Mixed

Steam Facts

Data current as of Apr 7, 2026. We re-crawl reviews and metadata every 14 days.

Steam Sentiment69

Mixed

Roughly half of players recommend it.

Quick Stats

Reviews

318en

421 total (all languages)

Current as of Apr 7, 2026

Released

Dec 19, 2018

Price

Free

Velocity

0.1/day

Slowing

Metadata current as of Mar 20, 2026 · Source: Steam

Market Reach

Free-to-play — revenue estimates don't apply.

About

Discover yourself in the “Age of Discovery” where you’ll sail out into the uncharted waters! Discover real historical artifacts and mystical legends! Start a company and make enormous fortunes! Fight in fierce sea battles! Whatever your play style, you can play who you want and how you want in UWO!

Sentiment History

Sentiment over time

Playtime Sentiment

Sentiment by time invested

· 320 post-launch reviews

33%73 rev

<2h

50%14 rev

2-10h

74%46 rev

10-50h

81%79 rev

50-200h

84%55 rev

200h+

85%53 rev

Players who invest more time rate this game significantly higher (+34pts) — a strong signal of a slow-burn experience that rewards patience.

Competitive Benchmark

Compared to 100 similar games in the Strategy genre released in 2018.

Sentiment vs. similar gamesBottom 38%

Popularity vs. similar gamesTop 37%

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