One Peasant Only
Warcraft II veterans will know what I'm talking about. A few things are differant though, including balancing features.
Ok, what happens is, the game starts and does not set up the pre-built structures in the beginning. Both sides are started with nothing, and when you first start, the first player to spawn is spawned with a construction kit/granger evo, and the Blaster is disabled until the Human player builds the reactor. Then, once a side has created their main power sources, they can begin building spawns, and then the regular game proceeds.
Balancing: The first player to join a side must wait until someone else joins to spawn.
The Blaster is disabled to prevent a rushing human from attacking the alien Granger.