Warcraft: Orcs & Humans, also known as Warcraft I, is the first game in the popular Warcraft series created by Blizzard Entertainment. It's a fantasy real-time strategy game (RTS) that was published by Blizzard and Interplay Entertainment in 1994 for MS-DOS, while the Macintosh version was released in 1996.
You can play as either the Humans or the Orcs, with 12 scenarios per side. Blizzard took inspiration from Westwood Studio's Dune II: The Battle For Arrakis, that established the genre of RTS, but expanded the concept with new type of missions, skirmishes and random maps. The success of Warcraft lead to Warcraft II: Tides Of Darkness and Warcraft III, and created one of the most popular videogames franchise ever.
Make sure to play this with keyboard and mouse as it is not really doable when using only one input.
To me the best the series has to offer - beautiful graphics, sound and gameplay which is highly addictive. Unlike the games after it this one is more of an action oriented game and the "select a million units and send off" is not possible. One can loose a lot of units when lenient on control, but in contrast the feeling of optimally using a small crowd is what makes this game immensely fulfilling.
The only downside is that as soon as the players can create Demons or Water Elementals the gameplay falters a bit making it a necessity to create these advanced monsters. Thus the game's becoming a bit one dimensional later on. A total shame that they did not release a Mission Pack!
Be it Single- or Multi Player - highly recommended!