: The original 2006 release has a "memory limit" bug that causes crashes on modern PCs. Official digital versions (like those on Steam or GOG) often include community-tested fixes or wrappers to prevent these crashes.
As of , the game is readily available for modern systems at a very low cost, often appearing in sales for just a few dollars.
: Pirated versions may lack multiplayer functionality or the ability to easily install fan-made maps and mods.
: Unauthorized installers are a primary vector for ransomware and spyware.
: You can often find Steam keys via the Humble Store , where a portion of your purchase goes to charity.