UFO is a low complexity game of an alien invasion of Earth. The alien player must land 5 of 8 available ships on Earth to win. The Earth player, with only eight rockets, must defend or perish. Movement is along orbital paths that form 7 concentric rings around the Earth. In addition to the UFOs and Earth's rockets speeding around, the moon orbits the Earth destroying all in its path. Combat is dice based. The advanced game adds dummy counters for the alien player and space stations for additional defence of Earth.

It feels really more like an abstract strategy game, but could be classified as a wargame.

The game consists of 1 16" x 16" map board, die cut counters and a 2-page rules booklet.

Description taken from BoardGameGeek.com, the best source for board game information on the 'net!