Off to a fantastic start… urm, something like that 🙂

UFO: Enemy Unknown (X-Com: UFO Defense in USA) is a popular strategy videogame made by Mythos / Microprose, where you take control of the X-Com organization to fight off the alien menace invading Earth.

OpenXcom is an open-source reimplementation of that game, licensed under the GPL and written in C++ / SDL, which was started back in February 2009 by a bored old university student who loves X-Com way too much.

It also seeks to improve the game by removing the known bugs, supporting modern technology (such as mouse wheels) and various other bits.

You can find the game and details at
You need the original game files, but luckily for you, you can buy them cheap off gog.com and Steam

Link do Vídeo