X-COM: UFO Defense

Global defence and close tactical decisions

X-COM: UFO Defense combines the management of an anti-alien organisation with tactical missions at landing and crash sites. Researching alien technology and manufacturing equipment connects those missions to the larger defence effort. A recovered item or successful operation can change what your organisation can field next.

The appeal is the relationship between those scales. You are not simply winning a sequence of unrelated fights: the broader campaign gives the tactical decisions a continuing purpose. This entry concerns the original UFO Defense data set.

2K · X-COM: UFO Defense

OpenXcom in a browser, with offline caching

OpenXcomWASM compiles the OpenXcom engine for the web. It stores imported game data and saves locally and caches its static files for offline play after the first visit. The creator documents periodic save synchronisation to browser storage, along with export and import for transferring progress.

The game data is separate from the engine. Supply the UFO folder from your own copy; look for subfolders such as GEODATA, GEOGRAPH, MAPS and SOUND. Selecting that actual data directory is more useful than selecting a store launcher or shortcut.

OpenXcomWASM · engine and storage documentation · OpenXcomWASM · file and save manager

Export before importing or resetting

The gear menu can export saves and import ZIP archives or individual .sav files. An imported save overwrites an existing one with the same name, so export your current set first if you want to preserve it. You can also restore a backup before starting the engine.

Reset All Data removes both the imported game files and the saved campaign. It is a fresh-install action, not merely a graphics reset. Keep an external save archive and the original game installation before using it.

OpenXcomWASM · file and save manager

Give the desktop interface room

The host supports current desktop browsers and recommends a mouse. This is OpenXcom's existing interface rather than a redesigned touchscreen campaign map, so a desktop is the clearer starting point for learning its controls. Once the files have been cached, offline access is useful, but browser storage still needs to remain intact.

OpenXcomWASM · browser guidance · OpenXcomWASM · engine and storage documentation