One Man Army - Open Market

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Open Market is a FreeBASIC remake of the DOS business board game Tamper. It is a game about buying, selling, passing, trying something risky, and then pretending the bad spreadsheet was somebody else's idea.

The current port has the title, menu, configuration screen, new-game setup, board play, reports, history, open replacement art, and local human multiplayer. It is not trying to ship the original copyrighted assets. This browser build uses the Open Market asset set in the data folder.

Play Open Market Now

This is the browser build. It should open right in the page and use the whole browser window.

Mouse and touch are the natural controls here, with keyboard and pad support in the port for people who want to move around the menus that way. The first load is a little larger because the browser version packs the runtime asset directory beside the program.

July 3, 2026
Posted by One Man Army

The JavaScript build is online now. It is the FreeBASIC program compiled to WebAssembly, with the open graphics and music data bundled so it can run from a browser without the original Tamper files.

This is the kind of game where the boring-looking buttons are the point. If a menu click does not take, a report looks wrong, or the board gets into a state that seems impossible, that is the good stuff to report.

The browser copy is not a replacement for native testing, but it is a good way to make the port easy to try while the rules and presentation keep getting tightened up.

Project Notes

Open Market is built as a FreeBASIC program first. The browser copy is there so it can be tried without installing anything, while still using the same source code and data layout as the desktop version.

The browser version lives in the play directory. It is the web page, the JavaScript loader, the WebAssembly file, and a data package containing the open replacement assets.