X-COM: UFO Defense is the original X-Com game that was released in 1993. A turn based battle game with resource management mechanics.
Play it for free in your browser on Classic Reload.
Or dowload a pre-packed DOS box version.
Or a later version: X-COM Apocalypse.
Pro See where the precursor to the XCOM series started
X-Come UFO Defense is the original X-Com title released in 1993. It successfully combined two different genres, turn based battles and resource management into a successful franchise. The first of its kind some would say, a classic.
Con Needs UI modding to feel fluid compared to newer releases
Being that this is a very old title there will be some issue playing it on modern systems that players may run into. Using some mods to help clean up its presentation may be needed but of course is extra work that some may not want to delve into.