X-COM: Apocalypse/Removed Items

The original concept of the game had many things that had to be removed from the final release:
 * Heavy Launcher AG Missile
 * Minilauncher AG Missile
 * Alien Gas Grenade
 * Tracker Gun
 * Tracker Gun Clip
 * Multi Tracker
 * PSI Grenade
 * ForceWeb
 * Dimension Distabilizer Gun
 * Mind Shield
 * Dimension Force Field
 * Alien Detector
 * Energy Pod

Also, the original worldmap had to be cut down to just one megacity. This explains the many types of vehicles in the game, where most of them are quite useless in just one city.