StarCraft was one of the most LAN-friendly games on the market when it was first released, giving players the option to install a "spawn" of the game on the other computers using one CD key. This spawned install allowed multiplayer with up to eight players, meaning that if you had one copy of the game, you could invite seven friends over with their systems and no one else needed to buy the game. The new version of this is a seven-hour guest pass we found in our [StarCraft 2] Collector's Edition of the game. That's not quite the same thing.

via arstechnica.com