Co-op games like Uncharted Waters Online
Below are 8 cooperative Steam games similar to Uncharted Waters Online, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Uncharted Waters Online page.
Ranked picks
- 1
ATLAS
Co-op alternative to Uncharted Waters Online — playable with friends. Shares Adventure and Massively Multiplayer with Uncharted Waters Online.
Set sail for the ultimate pirate experience! Embark on a grand adventure alongside thousands of other players in one of the largest game worlds ever built (and even claim a piece of it to call your own). Build your ship, assemble your crew, sail the high seas, and become a pirate legend!
- 2
Uncharted Waters Origin
Online Co-op alternative to Uncharted Waters Online — playable with friends. Shares Strategy and Adventure with Uncharted Waters Online.
Commemorating 30 years of the Uncharted Waters seriesSail through the vast oceans, massive worlds and contentsOpen world exploration RPG Uncharted Waters Origin
- 3
Pirates of Everseas
Co-op alternative to Uncharted Waters Online — playable with friends. Shares Strategy and Massively Multiplayer with Uncharted Waters Online.
Build a pirate empire & explore the open seas in this exciting strategy game!
- 4
Naval Action
Online Co-op alternative to Uncharted Waters Online — playable with friends. Shares Massively Multiplayer with Uncharted Waters Online.
Or were you deaf or were you blind when you left your two fine legs behind, Or was it sailing on the sea when you got the cannonball to your knee, I too was young and I was slim and I had a leg for every limb, But now I’ve got no legs at all, they were both shot away by a cannonball.
- 5
航海霸業 Maritime hegemony
Co-op alternative to Uncharted Waters Online — playable with friends. Shares Strategy and Adventure with Uncharted Waters Online.
"Navigation Domination" is an RPG game with the 15th century era of great voyage as the background. Based on the 14th to 19th centuries, especially the world after the great geographical discovery and the opening of new routes, maps, ports, cities and specialties for trade are constructed.
- 6
World of Sea Battle
Online Co-op alternative to Uncharted Waters Online — playable with friends. Shares Massively Multiplayer and RPG with Uncharted Waters Online.
Set sail in World of Sea Battle, an action-packed open-world MMO in the Golden Age of Sail! Command historic ships, battle in PvP & PvE, shape the economy, and engage in territorial guild wars in your quest for glory across the high seas!
- 7
Pirate101
Online Co-op alternative to Uncharted Waters Online — playable with friends. Shares Strategy and Adventure with Uncharted Waters Online.
Assemble your ragtag crew and prepare to plunder the skyways in search of the legendary map to El Dorado! Danger lurks around every corner as you outsmart clockwork soldiers, uncover hidden mysteries, and unleash powerful combos in this pirate turn-based tactics MMORPG.
- 8
Sea of Thieves: 2026 Edition
Co-op alternative to Uncharted Waters Online — playable with friends. Shares Adventure with Uncharted Waters Online.
Sea of Thieves is a smash-hit pirate adventure game, offering the quintessential pirate experience of plundering lost treasures, intense battles, vanquishing sea monsters and more. Dive in with this revised edition of the game, which includes access to digital bonus media.