ORIGINAL: Traveler
I finally finished the game. What a bore. The mothership was just another 2D level, and the "brain" was a complete pain. UFO:E has zero replay value unless someone uses it as an engine for a totally new game.
This is only true if a player does not enjoy this style of game/combat. Training the soldiers and going on missions, as well as launching the space defenses is what the game is all about. Most games do not have a variable tech tree. UFO:ET is fun in other ways.