World of Sea Battle

What it is

World of Sea Battle is a free-to-play naval MMO for Windows PC set in the Age of Sail. All players share one seamless sea, the Archipelago, which runs from warm southern islands to the icy north. Beyond the edge of the map is the Endless Sea, uncharted and dangerous. You start in a small schooner and work toward a 100-gun first-rate ship of the line. There are more than 50 historical sailing ships from the 16th to 19th centuries, including schooners, galleons, brigantines and frigates. You can upgrade them, refit their gear and change how they look. Thera Interactive, the developer and publisher, launched the game in Steam Early Access on October 21, 2025.

Why it hooks you

Combat comes down to wind, course and ammo. Round shot smashes hulls, bar shot tears sails, grapeshot thins out crews, and heated shot sets heavily armored ships on fire. If cannons aren't enough, close in and board.

Away from combat, players run the economy. You can haul tobacco and wine from the south or iron from the north, turn raw materials into finished goods and sell them on the exchange. Fishing is another option: the catch feeds your crew and you can sell what's left. Or you can skip honest work, board merchant ships and sell their cargo in port. With enough gold you can buy a private island, which becomes your fleet's stronghold and trade hub.

Who it's for

It suits players who want a shared open world at sea where they choose how to make a living. PvE pirate hunts are an easy way in, and PvP tests your ship and tactics against other captains. Any sail on the horizon could be prey or a threat. Friends can sail together in flotillas. Guilds fight for ports, get into political intrigue and compete for control of the Archipelago, which gives group players a long-term goal. Traders, fishers and explorers can play their own way in the same world.

Before you start

• Status: Early Access since October 21, 2025. The developer expects it to last at least a year and a half, so expect updates and balance changes.
• Price: free to play with in-game purchases. The developer says the game will stay free during and after Early Access.
• Account: you need a third-party World of Sea Battle account, which you can link to Steam.
• Minimum specs: 64-bit Windows 8 or newer, 2 GB RAM, about 2 GB of storage, Intel Core i5-4570 or AMD Phenom II X4 B60, and a GeForce GTX 460 1GB or Radeon HD 6850 1GB with Shader Model 5 support.
• Languages: 11, including English, Russian, German, French, Spanish (Latin America), Japanese, Korean, Polish, Turkish and Chinese. Russian also has voice-over.
• Reviews: Mostly Positive on Steam, with 72% of 3,546 English reviews positive as of October 21, 2026. This changes over time.