Frost Engine, previously known as World of Warcraft: Raid Leader, is a game where RPG and strategy are mixed in equal parts.
Due to a series of conflicts, the author decided to change the name and a series of characters in the game, so now it is no longer a game, but in fact a graphic engine. However, to enjoy Frost Engine in your PC you need to install an original World of Warcraft client.
Inspired by the marvellous World of Warcraft, in Frost Engine your mission is to lead and guide a group of up to 40 units, with total control over what they do: attacks, movements, cures, etc.
Also, on the Frost Engine author`s website you have the source code which you can use to create your own scripts and so adapt the game to your liking.