Horse

Age of Empires
The Horse appears as a Beta unit in Age of Empires. Unlike the Trade Workshop, which appears in one of the campaigns, the Horse does not appear in any campaign although it can be seen on the pre-game map for the Holy Man campaign. If accessed via special game editors, the Horse can be placed in a scenario as a Gaia unit. It is a large black Horse with spots near its tail, and much bigger than other cavalry in the game. It produces the same sounds as other horses in the game. It has 20 HP and no other stats. If other units approach it, it will run away much like a Gazelle, but is startled more easily and will disappear while it is running, reappearing every time it comes to a stop. If the mouse is hovered over it, the words "Right-click to hunt this animal" will appear, but this is impossible to do; right-clicking will just send your Villagers to the spot where it is standing. Likewise it cannot be attacked, either. Even CPU Villagers will approach it to hunt it, but they will simply follow it around without ever turning into Hunters.

If "gaia" is typed in as a cheat, the Horse can be controlled just like any other animal in the game, although it cannot attack and still cannot be attacked itself. It does not disappear if the player is moving it around, but it will still disappear when other units come near. Although it cannot be attacked, it can be killed if the player presses "Delete." The only other way to kill it is by activating "Attack Ground" at the spot where it is standing, with a Catapult or other similar unit. The Horse has the dying animation of a Gazelle and the carcass of a Lion.

Age of Empires II
The horse plays a significant role thrice in the campaigns, under the third and fifth mission of the Montezuma campaign, and under the first level of Attila the Hun.

In the third scenario of the Montezuma campaign, the player may opt to capture 20 horses from Cortéz to defeat him by keeping them in the player's own horse pen. In the fifth scenario, the player may capture horses and put each of them in the plaza outside the castle to create Elite Tarkans.

In the first scenario of the Attila campaign, the Scythians, in gratitude of Attila's rescue of their prince from the Western Romans, pledge to ally themselves with the Huns if the Huns would bring them ten wild horses.

Horses can be controlled like other units, and when a player-controlled unit moves close to it, it will automatically transfer its allegiance to the player's side, like gaia soldiers, whereupon the player can send the horses directly to the Scythian camp.

Horses can be killed but cannot be used for Food.

Age of Empires III
In Age of Empires III, in the Ice campaign, the player can control two horses. These cannot be killed, nor can they attack. However, with decent speed, they are useful for scouting.