X-COM: UFO Defense
X-Com: UFO Defense is a strategy and turn based tactics game from the early 90s. The player runs the organization called X-Com, tasked with defending the Earth from a UFO invasion. The player accomplishes this by placing, building and maintaing bases as well as controlling soldiers in the field combatting the aliens. The game is known for its difficulty.
Steam Version
The game is currently available for sale through Steam. It comes preinstalled with a DosBOX copy. The version as sold will enter full screen mode and has some graphical performance issues due to the settings being scaled wrong. Fixes forthcoming.
Difficulty Bug
The original version of the game has a bug which would run the game at the Beginner difficulty regardless of what the player actually selected. This bug went undetected until before the release of the sequel, at which time it was patched. The complaints regarding the game being too easy even at the highest difficulty setting led to the sequel's difficulty being scaled up so much that it's easiest difficulty was harder than the intended hardest difficulty for this game. The patch is included in all Steam versions of the game.