What Rank & Flag Is
Rank & Flag is a free, browser-based strategy board game in the Stratego style: two armies of 40 pieces with hidden ranks, a 10×10 board with two lakes, and one goal, capturing the enemy Flag. You play against the computer straight from the home page. There is nothing to download and no account to create.
Who Runs It
The site is an independent project operated by strategogame.online. You can reach us at support@strategogame.online with questions, suggestions or bug reports. If a rule seems to work differently from what you expect, tell us which move it was and we will look into it.
How the Computer Opponent Works
The computer runs entirely in your browser, in a background thread so the board stays responsive. It has three levels:
- Easy plays simple, partly random moves and does not make use of the ranks it has already seen.
- Medium remembers every revealed piece, attacks known weaker pieces with stronger ones, avoids throwing low ranks at unknown pieces and uses Scouts to probe.
- Hard estimates what your hidden pieces could be from everything it has seen, tries many possible layouts and looks several moves ahead in each before choosing.
At every level the computer only receives what a human opponent could see: where your pieces are, which have moved, and the ranks revealed in battles. It never reads your hidden ranks, and the game's automated tests check that.
Original Work
The piece designs, board, logo and all text on this site are our own. The rules pages are written from scratch in plain language, and the 7 formations on the setups page were designed for this site rather than copied from tournament games or other websites. Rank & Flag is an unofficial fan-made game; see the disclaimer for details.
Your Data
Your game, settings and saved setups are stored only in your own browser. Analytics load only if you accept cookies. The details are in our privacy policy.