: Often preferred by retro gamers because it is DRM-free . It typically retails for $5.99 , but is frequently on sale for significantly less.

: An authorized vendor that sells Steam keys for the game.

: You must own a legal copy of the original game files (from Steam or GOG) for OpenXcom to work, as it uses the original's assets (graphics and sound) to run. Play in Browser

If you purchase the game, it is highly recommended to use , an open-source reimplementation of the original game engine.

: It fixes numerous bugs from the 1995 original (such as the 80-item limit and research dead-ends) and allows for native high-resolution support.

While is not legally available as a free standalone download, it can be purchased for a low cost from several official retailers. Because the game is still actively sold and copyrighted by 2K Games, modern "free" downloads found on abandonware sites are generally not authorized by the publisher. Official Digital Retailers

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