What's a good MMO strategy game in the browser?

TapGuessr runs one shared world map for everyone playing, with no separate matches. Bytro's games (Supremacy 1914, Call of War) are deeper real-time options where each match lasts weeks.

Yes. The game is free to play in any browser, on a phone or a computer. There is nothing to download and no account to make.

How long does a game last?

A season lasts two weeks, and the map is shared by everyone playing. Most people play a few minutes at a time: spend your troops, check who's attacking you, and come back when your troops have built up again.

Multiplayer strategy games to play in your browser

No downloads, no launchers, no 40 GB patches. These are strategy games you can play against real people in a browser tab.

Season 1 is live: 23 players hold land, 5 days left to take yours.

A world map game in the browser showing several players' empires

TapGuessr: an empire-building game on one shared world

TapGuessr is a massively multiplayer strategy game on a real map of Earth. There are no separate servers or matches: everyone plays on the same map. You build an empire tile by tile, take cities for income, rule countries and defend your borders against everyone else, over a two-week season.

An empire spreading out of São Paulo on the TapGuessr map of South America — An empire growing out of São Paulo across South America.

It suits people who like strategy but don't have hours: troops build up while you're away, so it plays in short visits.

Warzone

Risk-style turn-based strategy with a vast library of maps and a strong competitive community.

Supremacy 1914, Call of War, Conflict of Nations

Real-time grand strategy set in the world wars and the present day, where one match lasts weeks. Deep economies and diplomacy.

Forge of Empires

A long-running city and empire builder that takes you from the Stone Age onwards, with guilds and battles against other players.

Generals.io

A fast, minimalist strategy game: capture the other generals on a small grid before they capture yours. Matches take minutes.

Lichess

The oldest multiplayer strategy game there is. Lichess is free, open-source and has no ads.

TapGuessr on a phone, showing the globe and the Claim the world. intro card — It plays on phones too: tap to zoom in, tap again to take a tile.

Choosing one

Short visits, real world map, huge shared game: TapGuessr.
Long wartime campaigns: Supremacy 1914, Call of War or Conflict of Nations.
Turn-based Risk with friends: Warzone.
Five-minute duels: Generals.io or Lichess.